Codes, Collectibles and Cool stuff

This guide catalogues door codes and the locations of useful items, rare weapons, and other oddities in ADACA.

Introduction

This guide contains information on where to find stuff in ADACA, both in the Campaign and Zone Patrol modes. This includes door codes, as well as the locations of early, rare and unique weapons, equipment, some other interesting items, and a couple of easter eggs.
Please be aware that this guide only lists specific rare items (or early non-rare weapon locations in the Campaign), so there are still lots of secrets and really useful items hidden throughout the Campaign and Zone Patrol modes which aren't listed here. This guide is not meant to be a detailed walkthrough.

IMPORTANT: Much of the fun of playing ADACA comes from exploration, so I strongly recommend only using this guide if you've already gone through the game once, or if you REALLY can't find the code that'll unlock that one door that's giving you a headache.

This guide is currently for version 1.3.7 of ADACA
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Campaign Episode 1 (Part 1)

SPRING THAW

Rare Weapons

Early Shotgun - y'know, like... a shotgun
Start SPRING THAW. After being woken up, you'll see a power cell on a small table next to Dr Chops. Grab it with your gravity arm and insert it into the receptacle on the northern wall of the room. This will open the northwestern door to a room where you'll find the shotgun and a few grenades.
Early Tactical Pistol - a suppressed semi-automatic pistol
Start SPRING THAW and leave Doc's clinic through the door. In the hangar, you'll see a small raised area with some large shipping containers next to it. Move some of the clutter in the room to help you climb on top of the shipping containers, then jump over to the upper balcony. The Tactical Pistol is lying on top of a loot chest there. BTW: The contents of the chest are random, which means you might end up with additional early weapons here.

Miscellaneous

Data Cache Reader
Start SPRING THAW and leave Doc's clinic through the door. In the hangar is a small raised area. The Data Cache Reader is on that small raised area, to your left.
Data Cache
Start SPRING THAW and leave Doc's clinic through the door. In the hangar, you'll see a small raised area with some large shipping containers next to it. The Data Cache is sitting on top of one of these large shipping containers.

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SHIP BREAKER

Miscellaneous

Data Cache Reader
Start SHIP BREAKER, turn right and follow the hallway until the bit where the platform is raised in front of you. The Data Cache Reader is to your left.
Data Cache
Start SHIP BREAKER, turn right and follow the hallway until the bit where the platform is raised in front of you. Use the button to lower the platform again, then get on the platform and raise it. You should see the Data Cache in front of you.

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GUTTED

Rare Weapons

Early Shard Rifle - a 5-round burst fire weapon with a bayonet. The shards stick to enemies and can cause additional explosions.
Get to the area where you can use boxes hanging from cables to attack the Police troopers. Walk over the wooden bridge to the lower platform, then go around the corner next to the health station. Look down from here to see a Conflux symbol on the wall below as well as a crashed drone. The Shard Rifle is next to that drone.

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REPO MAN

Rare Weapons

Early Assault Rifle - a fully automatic rifle with a grenade launcher attachment.
From the start of REPO MAN, make your way through the water to the small town where you'll meet Kelly for the first time. Climb the ladder on the large crane, then turn around and jump over the canopy (it looks like cloth, but it's solid) to reach the top of the building. The assault rifle is to your right, next to a white lawn chair.

Miscellaneous

Data Cache Reader
Make your way to the small town where you meet Kelly for the first time. Enter the building behind Kelly and then go into the room behind the bar. The Data Cache Reader is to your left.
Data Cache
Make your way to the small town where you meet Kelly for the first time. Move to the area where Doc is standing on the warehouse balcony. There is a narrow wooden ramp to your right, leading into the water. Jump over the planks, the fallen rebar structure, the boat and the wooden pier until you see an opening in the wharf's concrete foundation to your left (note the pentagon-shaped graffiti). Get in there to find the Data Cache.
Did you know you can skip the first part of the Police shootout in the town?
Just jump from the neighboring roofs on top of the warehouse where Doc is and you can move on to the next part of the level without fighting off the initial Police attack. Doc will even comment on it.

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RAIL HEAD

Rare Weapons

Tactical Pistol - a suppressed semi-automatic pistol
Walk over the small bridge at the start of RAIL HEAD (the one crossing over the train tracks) and then move towards the small hut. You'll see a 'box' symbol scrawled on its side to clue you in. Destroy the door to find the Tactical Pistol inside.
Laz Magnum - a powerful laser pistol
Follow the train tracks until you reach the area that's blocked off by energy fields. Inside that area, enter the big white building via the southern entrance. Turn 45 degrees to your left and you should see a doorway leading to a small wooden room. The Laz Magnum is on a table in that room.

Miscellaneous

Data Cache
About halfway across the train bridge, there's a two-storey building to your left. The Data Cache is on a table on the second level of that building.
Did you know you can jump on the train to skip the first part of the level?
Well... you can....
Data Cache Reader
Follow the train tracks until you reach the area that's blocked off by energy fields. Inside that area, enter the big white building to your left and make your way to the third floor. The Data Cache Reader is there, next to the battery you have to shoot to deactivate the second energy field.

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QUICK DETOUR

Nothing of interest here.

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TUNNEL VISION

Miscellaneous

Data Cache
You'll eventually find yourself in a darkened office space with zombie-like enemies coming out of adjacent rooms to attack you. The Data Cache can be found in one of the small rooms from which the zombies spawn, so you'll only be able to find it once they've broken down the door. Move to where you first entered the office and walk up the short set of stairs, The Data Cache is in the small monster spawn room to your left.
Data Cache Reader
In the darkened office space with the zombies, you'll see some glowing graffiti on a wall saying "OUR HOLY MACHINE! HE HAS BEEN BUILT!" The Data Cache Reader is lying next to that wall.

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Campaign Episode 1 (Part 2)

REST STOP

Miscellaneous

Data Cache Reader
From the start of REST STOP, walk up the stairs, meet Kelly again and leave the building with the train. Outside, look to the west. There's a small brick building on the left side of the area. The Data Cache Reader is inside that building.
Data Cache
After the building with the Data Cache Reader and before the entrance to the building with doors marked 'kitchen' and 'exit' (where Kass talks to you), look south over the edge of the area. You should see a small balcony beneath you. Drop down there and go into the room. The Data Cache lies on top of the large shipping container.

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NIGHT LIGHT

Codes

Door inside the Armoury - next to where you meet Kelly again
0451

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GAS

Codes

Roof Access Door - for the first building you'll come across
8105

Rare Weapons

Early Seeker Rifle - a scoped energy rifle firing remote-controlled exploding projectiles
Get inside the first building you come across (after jumping over the truck stuck in the fence). Remove the barricade to the stairwell and get up to the roof. The Seeker Rifle is next to the NPC called Fawks.
Early Concussion Rifle - a rifle firing explosive energy projectiles
Once you've reached the building with the energy field, use clutter objects to climb on top of the roof. The Concussion Rifle is next to a glowing graffiti saying "CHIMERA BLESS US".

Miscellaneous

Data Cache Reader
Get inside the first building you come across (after jumping over the truck stuck in the fence). Remove the barricade to the stairwell and get to the third floor (the first un-barricaded door) The Data Cache Reader is in the wide-open room, to your left.
Data Cache
After walking over the big bridge in an eastward direction, turn left and follow the cliff through the forested area to the north. You'll find the Data Cache once you've reached the northern end of the cliff.

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THE BREACH

Miscellaneous

Red Weapons Chest
Start THE BREACH, then get inside the base to the east. look down southward from the bridge over the train tracks and you should see a red train car with its door open on the side facing the rock wall. The Red Weapons Chest is in there.
Data Cache Reader
Start THE BREACH, then get inside the base to the east. Right after walking through the opening in the wall surrounding the base, you'll find a small building to your right, nestled against the wall (with a ladder to the roof). The Data Cache Reader is in there.
Data Cache
Start THE BREACH, then get inside the base to the east. Jump down from the bridge and follow the train tracks to the south. You'll come upon a bunch of derailed train cars. The Data Cache is behind these train cars, next to the derailed locomotive.
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Campaign Episode 2 (Part 1)

UNDERMINED

Codes

Secret Bunker Door
4924

Rare Weapons

Two Green Weapons Chests - not really rare, but a good opportunity to re-arm yourself
Start UNDERMINED and follow the cave. Jump over the shipping container and walk straight into the flooded part of the cave to the north. You'll find the two green weapons chests deep underwater.
Laz Magnum - a powerful laser pistol
Once you've gone through the warehouse with the laser mines, climb to the top of the construction crane in the large cave. The Laz Magnum is up on the highest level you can reach via the ladder.

Miscellaneous

Data Cache Reader
After suffering through the part with the radioactive barrels, you'll come to a cave area with hostile animals. Move all the way to the east, then all the way to the south, then turn right and follow the cave to get to the secret bunker door. The Data Cache Reader is inside, along with another green weapons chest and an infinite grenades chest.
Data Cache
In the 'maze' area with the electric anomalies blocking off parts of the cave, make your way to the southwestern area. The Data Cache is there, next to a graffiti showing the code for the secret bunker door where the Data Cache Reader can be found.
Did you know you can brute-force the warehouse section with the laser mines?
Drop down the shaft into the booby-trapped warehouse but stay in the shaft area. Hug the wall opposite the exit, grab a barrel with your gravity glove and throw it into the laser mines. This will cause the entire warehouse to explode, but you will take minimal damage.
Easter Egg The Sword in the Stone
Once you're in the tall building where monsters, Conflux and Cops are fighting against each other, make your way up the building. You'll eventually find yourself walking along a gangway on the outside of the building. Look towards the southwest to see an outcrop in the cave wall, with a sword stuck in the rock. AFAIK, there's no way to interact with it.

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THE ZONE

Codes

Hatch and Tower - a hatch on the ground in the northeastern corner of the first small outside area of THE ZONE. The keypad for the hatch is on a small reddish-brown tower found in the northeastern part of the map, next to the huge radar dish.
8686

Rare Weapons

Crossbow - a silent (?) crossbow with reusable bolts
Start THE ZONE, kill the sniper and jump out the western window. Turn right and you'll see a set of stairs. Go up the stairs, enter the building and use clutter objects to make your way to the uppermost level. The Crossbow is lying on a table here and there are more bolts stuck in a mannequin opposite the table.
Special Tank Gun - an ordinary-looking Rocket Rifle but with a much larger explosion radius and more ammunition than the standard Rocket Rifle
Enter THE ZONE, kill the sniper and jump out of the western window. Turn right and you'll see a set of stairs. Go up the stairs, but instead of entering the building, turn around and jump onto the brown pipes running from east to west. Move along the pipes to the west until you're right in front of the red-and-white 'water tower'. Jump up and you should see the special Tank Gun lying on top of the 'water tower'. Use your gravity glove to grab it mid-jump.

Miscellaneous

Easter egg Cube-Head
Go to CONCRETE FOREST via the hatch near the start of the level. Inside, destroy all enemies, then enter the small room to the west. Go up to the Idol and turn right. There's a part of the server wall where a wooden board is blocking a small air duct. Destroy the board and follow the air duct to a room with a grey cube-headed creature.
Data Cache Reader
Enter the small base to the northeast and use a battery to activate the elevator to the building in the northern part of the base. Ride the elevator all the way up and enter the upper floor of the building. The Data Cache Reader is in the northernmost room, opposite the button which opens the gate.
Data Cache
Enter the small base to the northeast and use a battery to activate the elevator to the building in the northern part of that base. Ride the elevator all the way up and enter the upper level of the building. Move to the northernmost room and look for a grate in the floor. Destroy the grate and follow the vent until you drop down into another room. The Data Cache is on a table in this room.
Red Weapons Chest
Enter the small base to the northeast and use a battery to activate the elevator to the building in the northern part of that base. Ride the elevator all the way up and enter the upper level of the building. Move to the northernmost room and look for a grate in the floor. Destroy the grate and follow the vent until you drop down into another room. The Red Weapons Chest is opposite the Data Cache.
Red Weapons Chest
Start THE ZONE and follow the street leading towards the northwest until you reach the dropship. Now look to your right. There's a big orange/brown pipeline going over the cliff edge. The Red Weapons Chest is behind that pipeline, next to a pink flamingo. To reach it, you need to get onto the giant radar dish and drop into a narrow gap between the dish and the pipeline.

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PHANTOMS

Codes

Door - choo-choo!
032546

Rare Weapons

Combat Rifle - a unique non-suppressed variant of the Tac Combat Rifle
Play PHANTOMS until you get to the bit where you drop into a room, only to have a bunch of bugs spawn from a half-opened door to your left. The Combat Rifle is behind the half-opened door. Use your gravity arm to get it.

Miscellaneous

Easter egg Cube-Head
Enter PHANTOMS and follow the level until you drop into the water. On the other side of the water area will be three big boxes you need to stack to get out of the water area. In the eastern wall behind those boxes is a destructible grate to a vent that'll lead you to the cube-headed creature.

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Campaign Episode 2 (Part 2)

THE CONFLUX

Rare Weapons

Savlo's Wrath - a unique full-auto Shard Rifle
After meeting up with Kelly again and dropping down the ramp to the area with the shipping containers, enter the building to your left. Inside, turn left to look at the blocked hallway. On the left side is a door which is partially bricked up and partially boarded up. Destroy the boards to find Savlo's Wrath sticking in the flesh growth in the middle of the room.
Bum Leg - a sawn-off rifle with a bayonet. Fits into the sidearm weapons slot.
After meeting up with Kelly again and dropping down the ramp to the area with the shipping containers, enter the building to your left. Inside, turn left to look at the blocked hallway. On the left side is a door which is partially bricked up and partially boarded up. Destroy the boards to find Bum Leg sticking in the tree-shaped flesh growth in the middle of the room.

Miscellaneous

Data Cache Reader
After crossing the bridge, move through the building with the large gestation tanks. Once you reach the westernmost part of the building, you should see the Data Cache Reader to your left, on the wall in-between a gestation tank and three computer consoles.
Data Cache
Once you've found Kelly again behind the energy field, look to your right. The Data Cache is sitting on top of a shelf in the same building.

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BRIDGE TOO FAR

Miscellaneous

Red Weapons Chest
After defeating the boss (stag-headed golden energy creature), go down the stairs that lead to the next level, but don't enter the door to the next level yet. Instead, keep going down. You'll find the Red Weapons Chest in the flooded part of the stairwell.

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POWERHOUSE

Rare Weapons

Arc Repeater - a slow-firing full-auto energy rifle with a low-power scope. The projectiles bounce off surfaces.
Leave the tunnel and move towards the wall with the Conflux banner on it. Look to the right to see a doorway. Enter the building through that doorway and go upstairs to find the Arc Repeater lying next to a corpse.
Target Locator - a locator for the Police ship's guided missile launchers
When you move toward the area where the path ahead is blocked by an energy field, you may notice an enemy above the energy field pointing a red laser at you. That's the enemy that carries the Target Locator. Deactivate the energy field, move up the stairs and through the shipping container area to circle the building and get to the Target Locator. Keep in mind that it's carried by an enemy, so the precise location may vary once you've arrived there.

Miscellaneous

Red Weapons Chest
Once the energy field separates you from Kelly, move forward and enter the building to your right. Move one floor up and you'll find the Red Weapons Chest in the corner of the room.

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CATHEDRAL

Nothing of interest here.

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THE CHIMERA

Nothing of interest here.

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THEOCIDE

Rare Weapons

Tac Combat Rifle - a suppressed (?) fully automatic assault rifle with great accuracy
After starting THEOCIDE, follow the hallway and take the first left to Doc's stash. Not really hard to find.

Equipment

Body Armor
After starting THEOCIDE, follow the hallway and take the first left to Doc's stash. Not really hard to find.
Ammo Bags
After starting THEOCIDE, follow the hallway and take the first left to Doc's stash. Not really hard to find.

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CALICO BLUE

Nothing of interest here.
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Campaign Episode 3

FAMILIAR ROOM

Nothing of interest here.

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AN ACCORD

Nothing of interest here.

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BREAK OUT

Codes

Armory force field code
0451... again...

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FUGITIVE

Nothing of interest here.

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SKY DOCKS

Miscellaneous

Red Weapons Chest
Play the level until you reach the part with the massive crane and the trains driving by. Cross the tracks until you reach a chain link fence, then turn around. You should see one of the red train cars with its side door open and partially blocked by a big blue shipping container. The Red Weapons Chest is inside that train car.

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STOWAWAY

Miscellaneous

Data Cache Reader
Start STOWAWAY and exit the little room you're in. Turn left to see some stairs. Take the stairs up. The Data Cache Reader is in the little building.
Data Cache
Start STOWAWAY and exit the little room you're in. Move forward along the left side of the ship until you can see a tower in the centre, with some shipping crates and wooden boards blocking its entrance. The Data Cache is in there.
Red Weapons Chest
Play the level until you reach the part where you can open a cargo hatch to drop a bunch of enemies to their deaths. Turn around and take the stairs up to find the Red Weapons Chest.

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BEACHED

Rare Weapons

Flak Rifle - a heavy fully automatic rifle with an explosive effect
Start BEACHED and exit the wreck. Move a little bit to the east, away from the wreck, then look towards the north. There's a big World War II style bunker structure there, nested against the rock. On the side of the bunker is a brown piece of sheet metal. Move it away to reveal a ladder. Climb up, then enter the boarded-up bunker to your right to find the Flak Rifle.

Miscellaneous

Data Cache Reader
Start BEACHED and exit the wreck. Move a little bit to the east, away from the wreck, then look towards the north. There's a big World War II style bunker structure there, nested against the rock. On the side of the bunker is a brown piece of sheet metal. Move it away to reveal a ladder. Climb up, then enter the boarded-up bunker to your right to find the Data Cache Reader.
Data Cache
Play until you get to the point where you have to move through the wreck of a beached ship. Move from here to the chain link fence further along. From the fence, you should be able to see a waterfall ahead and slightly to your right. The Data Cache is behind that waterfall.

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HOLD OUT

Nothing of interest here.

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SISTER LOCATION

Miscellaneous

Red Weapons Chest
Start SISTER LOCATION and meet Lexi in the control room with the holographic map. Leave that room through the door to your right, then immediately turn left and move around the outside of the control room. You'll see some cargo covered in a blue tarp. Jump over that cargo and you'll see the Red Weapons Chest.

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DIG SITE

Miscellaneous

Data Cache Reader
Play the level until you run into an energy field you need to deactivate to progress. You should see a camp to your left, with an upper and a lower area. The upper area has three large, rounded tents. The Data Cache Reader is in the middle tent.
Data Cache
Play the level until you run into an energy field you need to deactivate to progress. Once you've provided power to the red left, ride it up to where you find the key card. The Data Cache is in the same building, on the floor next to the key card.

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CRAWL SPACE

Miscellaneous

Red Weapons Chest
Start CRAWL SPACE and move forward, drop down, then move forward just a little bit more until you come to the first area where you can choose to go left, or through a narrow gap on the right, between the rock wall and a long horizontal rock formation. Look to your left as you pass that narrow gap and you should see the Red Weapons Chest on top of that horizontal rock formation.

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EPICENTER

Codes

final door code
silverfish

Rare Weapons

Flak Rifle - a heavy fully automatic rifle with an explosive effect
Can be found in the second rounded tent to your left.
Hammer Head - a double-barreled shotgun that fits in the handgun slot
Can be found in the second rounded tent to your left.
Pocket Rocket - an RPG launcher that fits in the handgun slot
Can be found in the second rounded tent to your left.

Miscellaneous

Red Weapons Chest
Move along the level until you can see a crashed burning dropship. This should be right before the big three-way fight with the hover tank. Walk behind that dropship to the big tree and turn around. You should see a gap between the unnarutally square rock formation and the natural rock boundaries of the level. Follow that gap to the Red Weapons Chest.
Red Weapons Chest
Move along the level, through the encounter with the hover tank and beyond the chain-link fence. Then, move forward and turn left at the tree. Drop down. Move through this area until the part where you have to turn right to get to the big chasm. Instead, look to your left. There's a pallet with barrels on it. Use your gravity arm to pile environmental objects on top of that pallet until it allows you to reach the rocky outcrop next to the pallet. The Red Weapons Chest is sitting right there, on top of the outcrop.

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GATE KEEPER

Nothing of interest here.
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Zone Patrol - ADMINISTRATION

Codes

Door to Power Plant
0451

Miscellaneous

Sleeper Pod
Enter ADMINISTRATION from POWER PLANT. Take a left, then a right up the stairs. In the main administration area, use the central stairway to move one storey up. Then leave the main area through the western exit. You should now be in a destroyed industrial-looking area with a clear view of the sky. Go through the roller-shutter door marked '2' to your left, then move to the western end of the building. The Sleeper Pod is there, nestled between broken pipes and steel beams.
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Zone Patrol - BEACH HEAD

Codes

BSMT-535 - a small basement in the building marked with the 'SAVLO' logo
47217

Rare Weapons

Bum Leg - a sawn-off rifle with a bayonet. Fits into the sidearm weapons slot.
From the drop ship, turn due east. On the other side of the body of water, you'll see a small wooded area, to the right of a set of stairs that lead down to an empty room. Within the wooded area, you'll find a mannequin with the Bum Leg stuck into it.
Tac Combat Rifle - a suppressed (?) fully automatic assault rifle with great accuracy
ONLY SPAWNS ONCE YOU'VE GAINED CROW AS A COMPANION - SEE FAQ. A Tac Combat Rifle and Body Armor will spawn only a few steps to the southeast of the drop ship. Note the flowers around them.

Equipment

Body Armor
ONLY SPAWNS ONCE YOU'VE GAINED CROW AS A COMPANION - SEE FAQ. A Tac Combat Rifle and Body Armor will spawn only a few steps to the southeast of the drop ship. Note the flowers around them.

Miscellaneous

Data Cache
Turn west from the drop ship. You should be looking at a big tube-like structure lying on its side. You can enter it through the water and you'll find the Data Cache inside.
Data Cache Reader
Follow the train tracks to the easternmost part of the map. Behind the warehouse-looking building, you'll see a tiny building wedged between the electricity pylon and the radar jamming tower. The Data Cache Reader is in the tiny building.
Sleeper Pod
From the drop ship, move due north to find two large dodecahedron-shaped structures in the water. You'll find the Sleeper Pod inside the northern one of the two dodecahedra.
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Zone Patrol - BLUE CAVERNS

Rare Weapons

Signal Sweeper - a tool that can be used to locate electronic equipment in the zone
Enter BLUE CAVERNS from CONDUIT. Turn right immediately and go down the stairs. Turn left and follow the train tracks until you get to a huge tower. Climb up the ladder and enter the upper level of the tower. The Signal Sweeper is there.
Tac Combat Rifle - a suppressed (?) fully automatic assault rifle with great accuracy
Enter BLUE CAVERNS from CATACOMBS. Follow the hallway, then jump over the outcrops rising from the water, going in a northwestern direction. Follow that path until you see a small area with gas tanks. There's a set of stairs going down from there. Go down the various stairs until you reach a point where you can see a doorway leading to a small bridge that leads to another building to the west. Don't follow that bridge, but go down one more set of stairs and enter the adjacent room (with the info terminal). Go down one more set of stairs and look underneath those same stairs. There should be a large metal sheet leaning against a wall. Use your gravity glove to remove it and reveal the Tac Combat Rifle sitting on a shelf.

Miscellaneous

Sleeper Pod
Enter BLUE CAVERNS from THE PINES and follow the path until you get to the area with the water and the trees. In the western pool you'll see the trunk of a tree sticking out of the water (there's also a ramp leading into the water close by). Enter the water here and swim to the northwest, behind one of the rocks sticking out of the water. The Sleeper Pod is sitting in the water there, behind the rock.
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Zone Patrol - BRAVO 2

Rare Weapons

Target Locator - a locator for an artillery battery. Have fun!
Enter BRAVO 2 from NECROPOL. Move through the gate, then turn left immediately. The first small building you see has the Target Locator in it. Enter the building and look immediately to your left to find it sitting on a table.

Miscellaneous

Sleeper Pod
Enter BRAVO 2 from NECROPOL, turn left and then immediately left again behind some police barricades. Move a few steps forward towards the pile of rebar blocks, then turn right. You should be able to see the Sleeper Pod nestled in a caved-in tunnel section.
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Zone Patrol - CATACOMBS

Rare Weapons

Mistake - a suppressed, scoped assault shotgun
Enter CATACOMBS from JUNCTION 06, follow the hallway and walk down the two short sets of stairs. You should now see writing on the wall showing the way to CISTERN, Lab 28 and 'HWY'. To the right of the wall with the writing is one of those enclosed staircases clad in what look like white wooden boards. Enter and take the stairs down. Leave the enclosure on the lower level, and move around to the other side of the same enclosure. You should see Mistake leaning against the white wooden boards of the enclosure.

Equipment

Ammo Bags - doubles your maximum ammunition for all weapons
Enter CATACOMBS from JUNCTION 06, follow the hallway and walk down the two short sets of stairs. You should now see writing on the wall showing the way to CISTERN, Lab 28 and 'HWY'. Move along the gangway in an eastward direction. After a few steps, you should see an enclosed staircase clad in what looks like white wooden boards to your left. Enter and then go through the door opposite the stairs. To your left, behind a bunch of boxes with a yellow cargo net, is a shelf with the Ammo Bags.

Miscellaneous

Data Cache
Enter CATACOMBS from BLUE CAVERNS, follow the hallway, turn left and then take the second left. At the end of this hallway, there is a narrow passage blocked by some clutter. The passage leads into a room with some goodies and the Data Cache.
Data Cache Reader
Enter CATACOMBS from STORM DRAIN and follow the markings on the walls to the Office area. The Data Cache Reader is in the Office space, on the eastern wall of the computer room.
Sleeper Pod
Enter CATACOMBS from BLUE CAVERNS and follow the path, turning right at the door and then going straight ahead until you hit the cave wall. Turn right and enter the small cave room. You'll find the Sleeper Pod to your left.

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CATACOMBS -> BIO LAB

Plaz Pistol - plasma handgun which can charge up to fire a burst of plasma projectiles
Enter BIO LAB (called 'Lab 28' on wall markers) and take a left. In front of you, to the right of to the entrance marked 'Medical Bay', is the table with the Plaz Pistol.

---

CATACOMBS -> THE NINE VAULTS

Nothing of interest here.
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Zone Patrol - CISTERN

Codes

Door to CKT 006
213658

Miscellaneous

Node-03
Enter the Control Center in the eastern part of the CISTERN. The node is in the northwestern corner of the room.
Easter egg Purple Worm Statue
Enter CISTERN from BEACH HEAD. Move down the stairs, turn right in the big hallway and move forward. At some point, there will be two white cabinets to your left. There is a hole in the wall behind the cabinets, leading to a little room with the statue.
Sleeper Pod
Enter CISTERN and climb down into the large water basin (the big hole from which you can get to CKT 006). There's what looks like a massive bit of pipe sticking out of the ground, with one end looking like it got blown off. The Sleeper Pod is inside that pipe.

---

CISTERN -> CKT 006

Nothing of interest here.
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Zone Patrol - CONDUIT

Miscellaneous

Node-02
Enter CONDUIT via THE PINES. Walk forward through the room with the health station, until you hit a railing. Follow the railing and climb down the ladder. Now, follow the hallway to the southwest, through the red train cars and through a green train car. Right after the green train car, there's a big opening to another room to your right. Go up the stairs in that room. Follow the hallway and take the first left. Now follow that hallway and cross the gangway bridge over the train tracks. Enter the room at the end and turn left. Node-02 is right there.
Sleeper Pod
Enter CONDUIT from ADMINISTRATION and follow the hallway north. Turn left and go down the stairs until you run into the truck. Turn northwest. You'll be looking at the big hall with the large spinning fan casting shadows. You should also see a door in the northwestern corner of that hallway. Go through that door and turn right. This is where the Sleeper Pod is.

---

CONDUIT -> TNL 18

Nothing of interest here.

---

CONDUIT -> TNL 18 -> NRC LAB

Miscellaneous

Dream Reader Device - which allows you to communicate with Sleepers
Make your way through the map until you reach the control room with the switches that open the doors. Open door number 5, then leave the room through the southern exit and take a left up the stairs until you reach the room with the incubators (aptly named 'science lab'). Leave this room via the southwestern exit and go through the rooms behind the now opened door number 5. The Dream Reader Device is just to your right as you enter, next to a laptop computer with a green screen.
Red Weapons Chest
Make your way through the map until you reach the control room with the switches that open the doors. Open door number 5, then leave the room through the southern exit and take a left up the stairs until you reach the room with the incubators (aptly named 'science lab'). Leave this room via the southwestern exit and go through the rooms behind the now opened door number 5. The very last room has the Red Weapons Chest in it.
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Zone Patrol - THE DISH

Codes

Hatch and Tower - a hatch on the ground near the exit to THE PIT in the eastern part of the map. The keypad for the hatch is on a small reddish-brown tower found between the Data Center and the exit to THE HAUNT, next to the huge radar dish.
8686

Rare Weapons

Crossbow - a silent (?) crossbow with reusable bolts.
Move to the easternmost part of the map, near the exit to THE PIT (Free Scrappers base). There's a building here with a 'West Adacadian Mining Corp.' sign on the side (the building you'll need to enter to get to the Free Scrappers base). Get inside that building, then use clutter objects to make your way to the uppermost level. The Crossbow is lying on a table here and there are more bolts stuck in a mannequin opposite the table.
Pulsar - a 4-round burst fire variant of the Plasma Rifle, with a plasma torpedo secondary fire mode
Make your way to the southern part of the map. You'll find yourself on a road running from east to west that's partially enclosed in a tube-like superstructure. Follow that road to its westernmost end. There's a Police drop pod there, with a corpse and the Pulsar weapon.
Tank Gun - An ordinary-looking Rocket Rifle but with a much larger explosion radius and more ammunition than the standard Rocket Rifle
Make your way to the eastermost part of the map, near the exit to THE PIT (Free Scrappers base). There's a building here with a 'West Adacadian Mining Corp.' sign on the side (the building you'll need to enter to get to the Free Scrappers base). Go up the stairs, but instead of entering the building, turn around and jump onto the brown pipes running from north to south. Move along the pipes to the south until you're right in front of the red-and-white 'water tower'. Jump up and you should see the Tank Gun lying on top of the 'water tower'. Use your gravity glove to grab it mid-jump.
Signal Sweeper - a tool that can be used to locate electronic equipment in the zone
Enter THE DISH from STORM DRAIN. Enter the brick building in front of you and climb the ladder to the upper level. Go into the next room on the upper level to find the Signal Sweeper on a small table.

Equipment

Body Armor
Make your way to the southern part of THE DISH. You'll find yourself on a road that's partially enclosed in a tube-like superstructure, running from east to west. In the middle of that road is a tent with a bunk bed. Jump up or climb up the bunk bed to find the Body Armor.

Miscellaneous

Data Cache
???
Data Cache Reader
Use a battery to activate the elevator to the Data Center in the northwestern corner of the map. Ride the elevator all the way up and enter the Data Center. The Data Cache Reader is in the westernmost part of the Data Center, opposite the open window overlooking the area
Node-01
Use a battery to activate the elevator to the Data Center in the northwestern corner of the map. Ride the elevator all the way up and enter the Data Center. The node is wedged in the southwestern corner of the second room (the one with the rows of computers).
Sleeper Pod
Enter THE DISH from THE HAUNT and follow the paved street eastward, then south towards the edge of the cliff (where the water tower and the silo are). Turn right and walk a few steps until you reach the outlet of the canal. The Sleeper Pod is right there.

---

THE DISH -> THE PIT

Miscellaneous

Easter Egg The Sword in the Stone
Go to THE PIT (Free Scrappers base) and make your way down the building until you're on a gangway running along the building's outside. Move to the southeastern corner of that gangway and you should see an outcrop in the rock wall. There's a sword embedded in the ground there, but AFAIK, you can't interact with it.
Sleeper Pod
Make your way down to the lower level of the area where the green train cars are. You'll find the Sleeper Pod in the green train car between the building (the Free Scrappers base) and the big construction crane.

---

THE DISH -> CONCRETE FOREST

Miscellaneous

Easter egg Cube-Head
Go to CONCRETE FOREST via the hatch in THE DISH. Inside, kill all enemies, then enter the small room to the east. Go up to the Idol and turn right. There's a part of the server wall where a wooden board is blocking a small air duct. Destroy the board and follow the air duct to a room with a grey cube-headed creature.
Sleeper Pod
Go the the southeastern part of the large room in CONCRETE FOREST. You'll find the Sleeper Pod resting there on the bit of the floor that's sticking out of the water.
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Zone Patrol - THE HAUNT

Codes

Door to THE BOWELS - a door with two neon green signs next to it
032546

Miscellaneous

Sleeper Pod
Enter THE HAUNT from THE DISH. Turn right and follow the dark hallway, then turn left and follow the hallway some more until you find yourself in the room with the big turbines and the ankle-deep water. Drop into the water and go the the northwestern corner of the area to find the Sleeper Pod.

---

THE HAUNT -> THE BOWELS

Miscellaneous

Node-04
Once you've entered THE BOWELS, enter the hallway on the right. Follow this hallway and move straight ahead at the first junction, then turn left. You'll find yourself in an area with significantly less flesh on the walls. Take the stairs down to your right, take the bridge to your left, then turn right and move up the stairs. If you're here for the first time, you're probably noticing the hallucinations. After the stairs, follow the hallway to the left, then take a right. Follow the hallway further into the fleshy area to destroy the thing that's creating the hallucinations. Now trace your steps back to where you just moved up the stairs. Turn left again, but instead of going right to the hallucination thing, there should now be an opened door in front of you (where you can see the blood on the ground). Node-04 is in the room behind this door.
Sleeper Pod
Once you've entered THE BOWELS, enter the hallway on the right. Follow the hallway and move straight ahead at the first junction, then turn left. You'll find yourself in an area with significantly less flesh on the walls. Take the stairs down to your right, then move onto the bridge to your left. Look west and down. You'll see the Sleeper Pod in the canal, wedged in-between the side of the canal and the fleshy growth.

---

THE HAUNT -> MTN 001

Nothing of interest here... I mean, except for ALL THAT...
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Zone Patrol - JUNCTION 06

Rare Weapons

Signal Sweeper - a tool that can be used to locate electronic equipment in the zone
Enter JUNCTION 06 from BEACH HEAD. Move forward and look towards the northwest. Right past the electricity pylon, you should see a green train car with a blinking red light next to Depot 6-B. The Signal Sweeper is inside that train car.

Miscellaneous

Data Cache
Go to the exit to CATACOMBS in the southern part of the map. To the left of the building, behind some barrels and pipes, you'll find the Data Cache.
Data Cache Reader
Go to Depot 6-B in the northeastern part of the map. Enter the building and move to the uppermost floor. The Data Cache Reader is in the western part of this floor.
Sleeper Pod
Enter JUNCTION 06 from CATACOMBS and leave the building. You'll see a small pond to your left. Get in and move to the southwestern edge of the pond. The Sleeper Pod will be sticking out of the water there.

---

JUNCTION 06 -> BM-061

Codes

Control Room Door
9795

Miscellaneous

Red Weapons Chest
Enter BM-061 and follow the hallway until you enter the room with the hallucinatory enemies. Turn around and climb up one of the ladders on the wall. Once you're up there, balance across the steel girders to the south until you reach a boarded-up door. Destroy the boards. The Red Weapons Chest is in this room, along with an infinite ammo chest and an infinite grenades chest.
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Zone Patrol - NECROPOL

Miscellaneous

K-102 - a small underground area with a bunch of computers
Go to the big ramp leading from the lower city to the upper city. Jump down the hole underneath the ramp to enter the sewers area. Move south until you reach the gangway. Turn west to enter K-102.
Easter egg Purple Worm Statue
Enter NECROPOL. There is a train bridge running through the area from the south to the north. Follow the train tracks to the north until you reach an area that looks like a small train station. You should see two train cars with cyan gas containers with the "SAVLO" logo to your left. These train cars are partially parked underneath a large dark building. Enter that building and use clutter items to climb to the opening in the ceiling that leads to the room above. The statue is in this (otherwise inaccessible?) room.
Sleeper Pod
Enter NECROPOL from JUNCTION 06 and follow the road eastwards until you see the stairs leading down to the sewers area to your left (near the exit to SHOP). When facing the sign pointing towards SHOP, turn left and follow the path, then turn right into the sewer area, then left again, following the flooded path. At the first intersection, turn left and you should see a dead end with the Sarcophagus.

NECROPOL -> SHOP

Nothing of interest here.

NECROPOL -> QX LABS

Codes

Northwestern door - use the PV-09 Goggles or the Phantom Rifle's scope while looking at the door to get the hint for the code
0233
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Zone Patrol - THE PINES

Rare Weapons

Arc Repeater - a slow-firing full-auto energy rifle with a low-power scope. The projectiles bounce off surfaces.
Enter THE PINES from JUNCTION 06 and follow the train tracks until you come to a train bridge. Turn right before the bridge and follow the beach to the northeast. The Arc Repeater is near the Police drop pod with the corpse.

Equipment

PV-09 Goggles - goggles which replace your binoculars and highlight enemies, anomalies as well as artifacts through walls
Enter THE PINES from JUNCTION 06 and follow the train tracks until you come to a train bridge. After crossing the bridge, you'll see a train car to your left (this is part of camp B-1). The P-09 Goggles are on a table in this train car.

Miscellaneous

Easter egg Purple Worm Statue
Enter THE PINES from JUNCTION 06 and follow the train tracks until you come to a train bridge. Cross the bridge, then turn right and follow the beach. You'll see an opening among the rocky outcrops towards the northern end of the beach. This is where the statue is hidden.
Sleeper Pod
Enter THE PINES from JUNCTION 06 and follow the train tracks until you come to a train bridge. Drop into the water to find the Sleeper Pod hidden underwater under the train bridge.

---

THE PINES -> OGR 018

Codes

Locker Room Door
1234

Rare Weapons

Flame Thrower - a flame thrower with lots of ammunition
Enter OGR 018, follow the hallway with the fire anomalies and enter the door to the right. Follow the hallway to its end and turn right towards the Locker Room. The Flame Thrower is behind the metal bars in the Locker Room. The room also contains an infinite ammo chest and an infinite grenade chest.

Miscellaneous

Data Cache
Enter OGR 018, follow the hallway with the fire anomalies and enter the door to the right. You'll be in a hallway with a big brute enemy. Follow the hallway to its end and turn right towards the Locker Room. The Data Cache is behind the metal bars in the Locker Room.
Data Cache Reader
Enter OGR 018, follow the hallway with the fire anomalies and enter the door to the right. You'll be in a hallway with a big brute enemy. Follow the hallway and turn left through the first open door. Turn left again and follow the hallway to the Data Cache Reader.
Red Weapons Chest
Enter OGR 018, follow the hallway with the fire anomalies and enter the door to the right. You'll be in a hallway with a big brute enemy. Follow the hallway to its end and turn right towards the Locker Room. The Red Weapons Chest is behind the metal bars in the Locker Room. The room also contains an infinite ammo chest and an infinite grenade chest.

---

THE PINES -> WOLF BUNKER

Miscellaneous

Node-05
Enter WOLF BUNKER and follow the level layout until you open the button-operated door. Walk to the other side of the room, across the stairs leading down (don't go down the stairs) and then go eastwards. You'll see a broken door on your left that you can go through - Node-05 is on the left side of the room you'll enter.
Sleeper Pod
Enter WOLF BUNKER and make your way towards Node-05 (see above) until you're in front of the broken door that leads into the room with Node-05. Turn around 180 degrees and took to your left behind the railing. The Sleeper Pod is resting on a bit of piping leading to the large machine hanging from the roof of the bunker.

---

THE PINES -> STAG BUNKER

Rare Weapons

Pulse Rifle - fires in bursts, with each successive burst from the same magazine being shorter than the preceding one
Enter STAG BUNKER and follow the hallway. Turn right and enter the flooded hallway. Turn right underwater, then right again. Cross the room with the rubble and steel girders lying in the water, then cross the room with the shipping containers lying in the water and leave it through the underwater doorway with the stairs. Destroy the wooden boards on the doorway and then enter the doorway opposite the door you just came through. The Pulse Rifle is on a shelf on the left side of the room, together with an infinite ammo chest and an infinite grenade chest.

Miscellaneous

Data Cache
Enter STAG BUNKER and follow the hallway. Turn right and enter the flooded hallway. Turn left underwater to find the Data Cache.
Data Cache Reader
Enter STAG BUNKER and follow the hallway. Turn right and enter the flooded hallway. Turn right underwater, then right again. Cross the room with the rubble and steel girders lying in the water, then cross the room with the shipping containers lying in the water and leave it through the underwater doorway with the stairs. Destroy the wooden boards on the doorway and then enter the doorway opposite the door you just came through. The Data Cache Reader is on the right side of the room.
Red Weapons Chest
Enter STAG BUNKER and follow the hallway. Turn right and enter the flooded hallway. Turn right underwater, then right again. In the room with the rubble and steel girders lying in the water, look up to find a hole in the ceiling. The Red Weapons Chest is lying on the rim of that hole.

THE PINES -> STONE TREE

Miscellaneous

How to enter STONE TREE in the first place
Enter THE PINES from JUNCTION 06. You may notice a big futuristic flesh-infested locomotive flying hovering in the sky directly to your left (it lights the area in red, so it's easy to spot). I think it typically spawns at night. If the locomotive has spawned, follow the train tracks over the bridge until you can see research station B-1 to your left. Stand next to the the tank with the radar dish on top, then move northwest into the little forested area. You should come across a nondescript hatch on the ground. Now wait for the locomotive to reach that area. Once the locomotive is directly above the hatch, it will open, allowing you access to STONE TREE.
Data Cache Reader
Enter STONE TREE, walk down the two sets of stairs, then take the set of stairs to your left, which leads you onto a platform. From here, follow the stairs down to the lower platform, then another set of stairs to a third, smaller platform (directly west of the strange rock formation). The Data Cache Reader is on that final platform.
Data Cache
Enter STONE TREE, walk down the two sets of stairs, then ignore the stairs leading to a platform to your left. Instead, follow the platform and the stairs until you're standing on the rock formation lining the walls of the cavern. Walk to the east, then turn towards the north. You'll be able to see the dodecahedron with the Data Cache inside to the north, slightly hidden behind a rocky outcrop.
Red Weapons Chest
Enter STONE TREE, walk down the two sets of stairs, then ignore the stairs leading to a platform to your left. Instead, follow the platform and the stairs until you're standing on the rock formation lining the walls of the cavern. Move to the northern edge of the rock formation, where you'll find a camera on a tripod. Turn to the east and you should see a metal ladder hanging from a recessed part of the rock. Climb down that ladder and the move to the west until you reach the point where the rocky outcrop intersects with the cavern wall. You should find a Red Weapons Chest to your left, hidden behind a rocky outcrop.
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Zone Patrol - POWER PLANT

Miscellaneous

Sleeper Pod
Enter POWER PLANT from ADMINISTRATION and take the stairs down to level 02. Leave via the exit marked 'hard hat area', then take the big train bridge to your left. To the south, you should see a blue train locomotive and a brown flat bed train car. The Sleeper Pod is on top of the flat bed train car, close to the locomotive.

---

POWER PLANT -> SANCTUM

Miscellaneous

Sleeper Pod
Enter SANCTUM from POWER PLANT and move straight ahead, past the irradiated barrels. The Sleeper Pod is behind the overturned yellow train car.
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Zone Patrol - PRIORY

Rare Weapons

Savlo's Wrath - a unique full-auto Shard Rifle
Enter PRIORY from BLUE CAVERNS or THE HAUNT. Move to the western part of the map by crossing the bridge, moving through the building with the large gestation tanks, past the train car and up the two flights of stairs until you reach the area with the buildings underneath the large highway bridge. Now move south past all the clutter until you can see a big building on your left with 'HE HAS BEEN BUILT' written on it. Enter through the door underneath that graffiti and follow the hallway until right before it terminates in a room. To your right, you'll see a door which is partially bricked up and partially boarded up. Destroy the boards and find Savlo's Wrath sticking in the flesh growth in the middle of the room.
Bum Leg - a sawn-off rifle with a bayonet. Fits into the sidearm weapons slot.
Enter PRIORY from BLUE CAVERNS or THE HAUNT. Move to the western part of the map by crossing the bridge, moving through the building with the large gestation tanks, past the train car and up the two flights of stairs until you reach the area with the buildings underneath the large highway bridge. Now move south past all the clutter until you can see a big building on your left with 'HE HAS BEEN BUILT' written on it. Enter through the door underneath that graffiti and follow the hallway until right before it terminates in a room. To your right, you'll see a door which is partially bricked up and partially boarded up. Destroy the boards and find Bum Leg sticking in the tree-shaped flesh growth in the middle of the room.

Miscellaneous

Data Cache
Enter PRIORY from BLUE CAVERNS or THE HAUNT. Move to the western part of the map by crossing the bridge, moving through the building with the large gestation tanks, past the train car and up the two flights of stairs until you reach the area with the buildings underneath the large highway bridge. As you go up the stairs, you'll notice a warehouse-like structure with mint-green gates to your left. Enter that structure to find the Data Cache on top of a shelf to your right.
Data Cache Reader
Enter PRIORY from BLUE CAVERNS or THE HAUNT. Move to the western part of the map by crossing the bridge and moving through the building with the large gestation tanks. Once you reach the westernmost part of the building, you should see the Data Cache Reader to your left, on the wall in-between a gestation tank and three computer consoles.
Sleeper Pod
Enter PRIORY from THE HAUNT and follow the highway bridge until the drop into the water. From up here, you should be able to spot the red girders of the destroyed bridge's support structure down in the water. The Sleeper Pod can be found amongst the rubble where the support structure of the destroyed bridge meets the water (next to the submerged bus).

---

PRIORY -> BASEMENT

Nothing of interest here.
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Zone Patrol - SOUTH RIDGE

Rare Weapons

Flare Gun - handgun with projectiles which produce fire and lots of light
Enter SOUTH RIDGE from PRIORY and follow the linear level layout to the west where you'll see a teleportation rift. To your left, you can see a small building with the 'SAVLO' logo, next to a tall radio tower. The Flare Gun is in that small building.

Miscellaneous

Sleeper Pod
Enter SOUTH RIDGE and follow the relatively linear map through the room with the drawbridge, through the big tunnel, over the metal gangway. You'll eventually find yourself in a highway tunnel with a bunch of overturned buses. Move towards the western tunnel exit (where the big blue banner is hanging), then turn right immediately after leaving the tunnel. The Sleeper Pod is nestled between the rocks in the small area with the trees, right next to the street.

---

SOUTH RIDGE -> ROOK'S NEST

Nothing of interest here.
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Zone Patrol - STORM DRAIN

Codes

Arrow Head One - a bunker hidden behind the waterfall in the southwestern part of the map
325174

Miscellaneous

Sleeper Pod
Enter STORM DRAIN from BEACH HEAD. Move south until you can see the big building with the entrance to THE DISH (the building which has a radar dish symbol over its gate and a SAVLO logo to the right of the gate). To your right (west), you'll see a passage leading to a smaller area (not the one with the railway system). Follow this small passage and you'll find yourself in an area with water canals. Immediately after entering the area, turn right, enter the canal and look towards the metal bars in the water - the Sleeper Pod is behind those bars.

---

STORM DRAIN -> ARROW HEAD ONE

Rare Weapons

Phantom Rifle - a railgun that can shoot through obstacles and enemies alike, with a scope that shows enemies, anomalies and artifacts through walls
Enter ARROW HEAD ONE, turn right and follow the hallway, turning left the first chance you get. The Phantom Rifle is on a table in this room.

---

STORM DRAIN -> COMS BUNKER

Rare Weapons

Laz Magnum - a powerful laser pistol
Once you've progressed a fair bit into the Custodian's quest line, you'll get access to the hatch on the ground in the northeast of STORM DRAIN, which leads to a bunker containing a Laz Magnum as well as several useful not-quite-rare weapons (such as a Grenade Launcher, a Machine Gun, Tactical SMGs and Tactical Pistols etc.). You'll also find lots of ammunition as well as an infinite ammo chest and an infinite grenade chest.
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Zone Patrol - Secret Teleporter Hub

Miscellaneous

How to get to the Secret Teleporter Hub in the first place
The Zone will sometimes spawn purple 'rift' anomalies, and there are also fixed rifts in THE PINES and SOUTH RIDGE, all of which can be easily identified from a distance by their purple glow. Walking into these rifts will teleport you to a random location, but occasionally, you'll be teleported to the Secret Teleporter Hub instead. As of right now, there doesn't appear to be a way to force the rift to bring you to the Secret Teleporter Hub, so getting there might require jumping into rifts a lot until the RNG gods are with you.
Some people report that following the friendly astral dog which can sometimes be encountered in THE PINES is a reliable way to get to the Secret Teleporter Hub. The dog should lead you to the teleporter rift on the little island and it's possible that this triggers the Secret Teleporter Hub as a fixed destination when walking into the rift.
Sleeper Pod
Once you get teleported into the Secret Teleporter Hub, you can find the Sleeper Pod by going north by northwest. The Sleeper Pod is in the lower area with the blue/purple floor.
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Zone Patrol - Missions

Operation Ear-Horn

This mission is set on the BEACH HEAD map and there are no additional secrets to be found.

---

Operation Arrow-Head

Miscellaneous

Data Cache
After starting the mission, get onto the landing pad. The Data Cache is just to the north, nestled between the landing pad and the rocks.
Data Cache Reader
Make your way through the mission until you reach the small base with the mysterious crystal shard. In the eastern part of this base are two small buildings with rounded roofs. The Data Cache Reader is inside one of them.

---

Operation Black-Horse

Nothing of interest here.
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Zone Patrol FAQ

Where is the tier 1 key card?

Enter JUNCTION 06 from BEACH HEAD and follow the train tracks west. Behind the building marked 'Depot 6-C', you'll see a four-storey building. Get inside and make your way to the third floor (counting the ground floor as first floor). The key card is on the table next to a bunch of computers.

Where is the tier 2 key card?

It's in the Data Center in THE DISH. Ride the elevator up and enter the westernmost room. The key card is on the computer console directly underneath the window which overlooks the southwestern part of the map, opposite the Data Cache Reader.

Where is the tier 3 key card?

Find BSMT-535 in BEACH HEAD (it's a location on the map, not a separate map). Enter the code-locked door and you should see the key card on a table to your left.

Where can I find rare weapon XYZ not listed in this guide?

Weapons Chests: The game spawns random weapons in three types of chests:
1. Orange chests seem to have a low chance of spawning very common weapons and a high chance to spawn things like ammo and shield energy.
2. Green chests spawn common to rare weapons such as the Heavy Rifle, Plasma Rifle, Swarm Launcher etc.
3. Red chests spawn very rare weapons such as the Phantom Rifle, Flame Thrower or Fusion Cannon.
Concussion Rifle: One reliable way to get a Concussion Rifle is to do the Free Scrappers mission you get after finding the scout. This mission has you kill three Conflux Cardinals, all of which carry Concussion Rifles. Note that once the Cardinals are dead, they won't respawn, so you can't get Concussion Rifles from them infinitely.
Early access to rare weapons: If you have the companion Mike, you can get a number of (common or rare) weapons early. Every time you switch the map, Mike spawns with a different weapon. You can then pick up any gun from the environment with your gravity glove and gently toss it to Mike - he will pick up that gun, leaving the one he spawned with on the ground. The weapons I've seen Mike spawn with include (but are not limited to): Tac Shotgun, Automatic Shotgun, Pistol, Heavy Rifle, Grenade Launcher, Tac Combat Rifle, Smart Rifle, Seeker Rifle, Laz Magnum, Bum Leg, DMR, Ancient Rifle.

Where can I find traders to buy equipment?

Note: If you're looking for a detailed breakdown of what you can buy from which trader, you can find that in Elegant Caveman's guide.
There are four vendors in the game:
1. The quartermaster on the VAKT ship sells basic weapons.
2. The quartermaster in THE PIT (Free Scrappers base, reachable via THE DISH) sells advanced weapons and some equipment.
3. Rook in ROOK'S NEST (reachable via SOUTH RIDGE) sells high-tech (energy) weapons and advanced equipment.
4. The shop keeper in SHOP (reachable via NECROPOL) sells some particularly rare weapons as well as some equipment.

What are artifacts for, where do I find them and are there enough of them?

Note: For a detailed list of artifact locations, refer to Elegant Caveman's guide.
Artifacts are used to buy items from vendors. Once you've bought a weapon or piece of equipment, your purchase will be available in the VAKT ship's armoury whenever you start Zone Patrol.
Artifacts are sometimes hidden in hard-to-reach spots or underneath clutter objects. I strongly recommend using the PV-09 Goggles to make artifact hunting much less of a hassle.
As of version 1.3.7 of ADACA, there aren't enough artifacts in the zone or in the mission areas to buy everything, but the character Rook will eventually give you a quest called "Shooting Stars" which involves securing drop pods falling from the sky. Securing such a drop pod will reward you with artifacts, and as far as I'm aware, you can do this infinitely to farm infinite artifacts.

How do I unlock the companions?

VAKT Conscript: This companion should be unlocked as soon as you enter the zone for the first time and receive the first radio communication from VAKT about how you're on your own out there.
Mishka: In the VAKT ship's hangar, find Mishka the dog to the right of the drop ship. Pet the dog (you know you want to!) to unlock Mishka as a companion.
Mike: In the VAKT ship's hangar, use the ladder to climb up to the 'balcony' with the yellow railings to find a duck. Use the duck to unlock Mike.
Casadoor: Complete the Free Scrappers mission to find the scout, then walk by the Free Scrappers hanging out between Calliope and the vendor, by the radio. Casadoor will talk to you about another mission, unlocking this companion. If Casadoor doesn't talk to you immediately after finishing the mission for Calliope, just exit the area, enter it again and walk up to Casadoor.
Ko-Dak: Enter ARROWHEAD ONE, follow the hallway, climb up the ladder or take the elevator and follow the level until you find the exit blocked by an iron grille. This will unlock the Arrowhead One mission in the VAKT ship. After completing that mission, you'll have access to Ko-Dak as a companion.
Crow: Enter THE PINES from JUNCTION 06 and follow the train tracks until you come to a train bridge. Cross the bridge, turn right and look at the grass-covered raised outcrop overlooking the beach (northeast fo the electricity pylon). Get on that outcrop and you should see a red flower. Pick up that flower. The next time you get close to Crow, you'll automatically hand over the flower, permanently unlocking Crow as a companion. I believe Crow spawns randomly on some Zone Patrol maps, but I've found the S-shaped hallway right after entering ADMINISTRATION from CONDUIT to be a very reliable way to get Crow to spawn. Just leave the area and re-enter it a bunch of times and Crow should spawn eventually.

Zone Patrol FAQ - Quests

Which symbols do I have to put into the five nodes?

Hint:Here are the hints you can find in the zone (in no particular order):
LIGHTNING IN THE POWER SUPPLY
HAMMER IN LIVING ROOM
WOLF IN THE WOLF DEN
STAR HIGH IN THE WELL WATCHED SKY
COG IN THE WATER WHEEL
Solution:The hints each refer to a location and the symbol you have to put into the node at that location:
Node-01 in THE DISH: a four-pronged star
Node-02 in CONDUIT: a lightning bolt
Node-03 in CISTERN: a cog
Node-04 in THE BOWELS: a hammer
Node-05 in WOLF BUNKER: a wolf's head

How do I find the geomarkers left behind by the scout?

Hint:This is about the quest you get from the Free Scrappers. Keep in mind that this scavenger hunt isn't limited to THE DISH map. If you're having trouble finding the geomarkers, find the Signal Sweeper in THE DISH. It will point towards electronic equipment such as the geomarkers you're looking for. By the way: The geomarkers emit a blinking green light which makes them easier to spot.
Solution:You'll find one marker in THE DISH near the entrance to the base that contains the Data Center. The second one is behind the waterfall in STORM DRAIN. The third is hidden among trash in the water in the main tunnel area of CATACOMBS and the fourth is in JUNCTION 06 near the exit to CATACOMBS, next to the lake. Finally, the scout can be found behind a door inside a big building in the upper city area of NECROPOL.

Where do I find the three Conflux cardinals?

Solution:The first cardinal can be found in BLUE CAVERNS, in the building at the end of the long bridge (on the opposite side from the end with the huge tower).
The second cardinal can be found in the NECROPOL sewer area - see "K-102" in this guide for the exact location.
The third cardinal is in the upper area of the POWER PLANT.

Where are the three heavy drones?

Solution:The first drone is in the NECROPOL sewer area.
The second drone is in BLUE CAVERNS, in the building marked PT-21. Go to the huge bridge in the lower area and move to the big tower at one end of the bridge. Turn right and you should see the building.
The third drone is in CKT 006, the sub-area you can reach through CISTERN. You have to swim up to the upper level of the area with the strange reactor thing. The drone should be in the control room up there.

Zone Patrol Maps

There are two maps that can help you with finding locations in Zone Patrol: Your personal map which you can access by pressing 'J', and the systems map you can find on the information terminals scattered throughout the zone. Note that some in-game locations aren't marked on either map.

Here's the systems map:

And here's the journal map with the markers for specific locations:
1: STAG BUNKER
2: WOLF BUNKER
3: BM-061
4: Drop Ship Landing Zone
5: COMS BUNKER
6: ARROW HEAD ONE
7: Data Center
8: THE PIT
9: MTN 001
10: ROOK'S NEST

Acknowledgements

This guide collects information I got from playing the game myself as well as contributions made by other players in the Steam discussions section. Thanks to anyone who ever posted information in the Steam discussions and helped their fellow players out!

If you've found something in the game that's not listed here or if you find my descriptions hard to understand, feel free to comment below and I'll change the guide accordingly!

[YoghoStick]

In case someone is still looking: i've found the location of the hint for Node 01. It's in Administration on a desk in one of the office cubicles, in the same room where the code for the door to power plant is .

[Cahalith]

I think you may be referring to the thing I called "Hatch and Tower" in this guide. You have to put the code into a keypad on top of a squat tower in The Dish, which then opens a hatch in the ground near the exit to the Free Scrappers base . This is actually part of the main quest of zone patrol.

[wild eyes]

Any idea what the bunker is for in the Dish? Has a code saying 8686, and is marked by a question mark using the terminal map

[FreeSlave]

Thanks. I couldn't find the way to obtain the code for the door at the end of the Epicenter. So I had to refer to this guide.

[Badguy292]

Ah, I figured it out, on my way to Node 2 in Conduit! I guess I missed it before.

[Badguy292]

So uhh... I am still not sure what the Sleeper Pods are for, is there some mission I've missed or an NPC I haven't talked to? I see the sleeper pods quite often but no purpose for them... Yet.

[Thyrork]

Thank you for this, it was extremely helpful for completing zone patrol.

[Cahalith]

IIRC, you should be able to find the item needed for the Rittman quest by going to the board room with the big table next to the stairs in Administration. The item should be on the table. It's the board room I used as the header screenshot for the Administration section in this guide.

[MoonGrrl]

By the way, where the hell is Rittman? I've been all through Power Plant, Administration - and heck, THE ENTIRE MAP - and I seemingly cannot find him.

[MoonGrrl]

It was data caches. Also, found the thing that lets me listen to their dreams.

Almost too bad you don't get a companion out of it...