[WIP] Your guardian angel for Ultra-Nightmare

Greetings Slayers.

In this guide i will try to breakdown my Ultra-Nightmare run in order to help you succesfully beating the game. These are my choices for the run and my favorite way to play, but there are many ways to leave alive from a fight.

I will try to overview every levels, new enemies and how to get rid of them in Nightmare / Ultra-Nightmare, the weapons and their best use, useful secrets to help you complete the run as well as break down difficult parts for each levels.

Weapon mods to maximise, armor points and runes will also be discussed, at least for those i recommend playing with.

Reminder, this is just my point of view, other guides / videos might, probably ? certainly ? be better ? Maybe not ? idk.

If you believe something is missing, share it in comments, there are probably over powered strategies i do not know of, or things i overlooked. I might add them to help as much as possible.

Also, this is not a guide to cheat Ultra-nightmare, it is how to beat it.

General tips

A few tips might be usefull for the entire run, so i'll try to summarize them here.

(Screenshots from the mini-map i put in this guide will have the in-game cursor pointed out at whatever the screen wants you to see :P)

Stay in movement.

Obvious, even the game tells you to, but you need to master your movement and positioning in order to survive. You have two jumps, two dashes and after a few levels, a grappling hook. So, no excuses to stay in a corner ... or a 2 meters wide circle. Move ! If you don't, the game will punish you.

Always keep an eye on your numbers.

You should, for the most part, know at any given time how much ammo and equipment you have in your backpack. This discipline will allow you to not die miserably by attempting to dive the demons, thinking you can bloodpunch a few and use the Minigun shield while you gather the fallen health pods, only to notice you have no bloodpunch ready nor bullets to shoot.

Now that you know what you have .. get what you need !

A fight should always flow according to what you need. Low health? Run away from the threats and find a fodder to glorykill. Low ammo? Get yourself a chainsaw victim. Feeling cold ? Heat the atmosphere up with the flame belch to regain armour. You must constantly be refilling your stuff, while shooting stuff. Your goal is to compensate on a side for what you lose on the other side, to keep the fight flowing in your favour.

Keep shooting

Shoot, shoot, shoot. Whatever you do, try to keep the pressure on the demons, even if that means throwing grenades will running away with a few hp.

Nightmare run is good practice.

I would recommend a Nightmare run before, to adapt to the demons' health and damage. If you don't feel confident enough, you can also play through Nightmare level a few times in a row, before trying the UN level when you feel ready. Doing that level by level is a safe approach.

Use the wheel to change weapons and mods.

Slowing the action to think and select your weapon is usefull. Know that you can also change mods while slowing time.

Let's say you have the Plasma gun in hand, and the Heavy Cannon with the Mod B last equipped. Open the wheel, select the Heavy Cannon and press f (The bind to usually swap your mod), then release the bind for the weapon wheel. You now have in hands the Heavy Cannon with the Mod A equipped, ready to use.

Be at peace with failure.

You will die at least once, it is almost guaranteed. Keep that in mind.

Do not panic when parkouring.

Unlike DOOM 2016, falling down a cliff doesn't mean death, so relax and don't worry too much if you fall down. Well, don't fall down too much though, it still costs something.

Abuse dash and jumps to run away after glorykilling something.

Self explanatory, stay away, stay safe.

Do not feel safe.

You never are and never will until the end credits. A stupid tentacle can kill you, fire can terminate your run, shooting a rocket at your feet can be your DOOM. Be careful.

Also as a side note, the guide mentions the most tedious, unfair or surprising fights. Some are clearly arena where ♥♥♥♥ is about to break but some random skirmish can even be worth mentionning to not die miserably.
THAT BEING SAID, EVERY ENEMY IN THE GAME CAN KILL YOU, so be mindful even in parts not mentionned in the guide.

Farm like a capitalist.

You should rush the Meathook mastery for the Super Shotgun, allowing you to generator armor off demons you grapple to. Once you have enough weapon points, it will require you to kill 50 demons while you are grappling in the air. Farm.

Additionnal Tips

• Lock-on-burst + a 4th rocket on Mancubus = Kill
  
  
• Lock-on-burst on Whiplash = Kill
  
  
• One charged Arbalest shot on a Cacodemon = Kill
  
  
• Two charged Arbalest shots on a Pain Elemental = Kill

Summary of what mod is important

Must have mods:

• Sticky bombs: You wanna master it to get the two extra bombs, wonderful to clean fodder demons.
  
  
• Full Auto: You don't necessary have to master it, the mod in itself is a reliable source of damage early on.
  
  
• Precision Bolt: Great to destroy weak points from a distance, this is an alternative to sticky bombs.
  
  
• Heat wave: Decent way to recycle the plasma you shoot, three charges give you a great cleaner if you need to run away. Master it, it's wonderful against bosses especially the Icon of Sin.
  
  
• Meat Hook: Best weapon mod of the game, gives you a gap closer, survivability and escape. Mastering it is so important that i recommend you to farm it, especially during the first Doom Hunter encounter.
  
  
• Lock-on Burst: One of your best way to deal with heavy targets in short time. Mastering is not necessary.
  
  
• Mobile Turret: Transform your minigun into a shredding beast, useful against bosses and super heavy. The cooling mastery is a great help.
  
  
• Arbalest: With this, this ballista becomes your favourite anti flying demon weapon. It's the go-to weapon against Pain elementals.

Praetor Tokens

Praetor tokens are precious, i tried to list every tokens available in the levels in "Useful secrets" parts.

Upgrades in the exploration section are useless in this difficulty.

I would recommend Thicker skin and Faster Dasher to be immuned to red barrels and to recharge faster your dashes. Hit and Run can be purchased later on to refill dashes on glory kills.

After that, max out one of your equipment, most likely Cryo grenade because it is wonderful at saving you. All 4 upgrades are necessary, i reckon the order doesn't matter much, tho you should pick Frost Bite or Permafrost first, to deal easily with Whiplash.

If you want to go for Frag Grenades first, i believe it is viable too. Combustion Concussion or Frag Stock Up will allow you to get a bit of crow control the Cryo grenade would have given you.

Level up the second equipment next as well as taking Grappler and the Environment upgrades.

Runes

Concerning the runes, i'm taking 100% as a first rune the Air Control. It gives you so much more control in fight or parkour section, fights without it are harder as even though you can double jump, you cannot change trajectory mid flight. It feels like you just have a simple jump. This runes provides much needed flexibility. Should you try it for the first time though, I recommend training a little bit with it before going into UN, as it takes some time getting used to.

I would also advise as a second rune Saving throw, it will give you once chance to not die. It works only once for the entire run so think about changing it if you burnt it.

In the third rune spot i like Blood Fueled. Gives you an angry speed boost after glory killing. Combined with the glory kill boost refill, you become a monster.

Equipment fiend is also very good, decreasing the cooldown rate for Frag and Cryo grenade when you kill / benefit from their effect. (Cryo grenade can be a game changer so having it faster is good)

Punch & Reave and Chrono Strike, healing you when Blood-punching and Slowing down the time can also be good to consider.

The rune that increase the time where demons stay in glory-kill stagger state can also be consideered.

it is also worth noting that, especially on higher difficulties, demons will overall be more prompt to close in for a group hug while you are glory killing a buddy of theirs. Faster glorykills gives them less time to make their move on you. You don't want to get hugged by a mancubus.

Sentinel crystals

Upgrading your ammo capacity and hit points (Preferably Health first) is essential. Favour Belch armour boost and Loot Magnet as those two upgrades are useful and they give you both good side upgrades. Whatever you take, aim to complete upgrades instead of just picking a side of one upgrade.

Health for Blood or Quickdraw Belch are fine as both splits give you resistance, though the first one is better in my opinion.

You eventually will get every upgrades. Armour for Blood is also great once your armour is maxed up.

Also upgrading ammunition to the maximum is in my opinion the thing to do in the final part of the game. You just need a couple ammo up early, then full health / armour.

Hell on Earth

Weapons:

• Shotgun: Solid weapon, deadly at close quarter, can be used from mid range to lower the health of fodder enemies to glory kill them. Both mods are great and will be unlocked at the very beginning.
  
  
• Heavy Cannon: Constant base of damage especially with headshots, Precision bolt is in early playthrough more usefull because of it's ability to quickly destroy demon's weakpoints.
  
  
• Fragmentation Grenade: Usefull way to stagger Heavy chasing you or cleaning fodder. Substitute to Sticky bombs concerning Cacodemons.

Enemies:

• Zombies: Fodder, see them as any supply you would need. Don't bother killing them if you do not need ammo / health.
  
  
• Imps: They tend to preshot hard with their fireball but they are dealt with pretty easily with only one Sticky Bomb from the shotgun. Aim, stick, next.
  
  
• Blaster soldier: They are less agile and dangerous than imps, yet you wanna dodge when they charge their plasma cannon. Headshot with precision bolt or Sticky bomb. You could even just shoot with the shotgun or heavy cannon without mod.
  
  
• Arachnotron: They are the biggest threat you have to face in the first level. They have a very dangerous attack from short to mid range that can even bother you from afar. Destroy it's turret with a well placed Sticky Bomb or by using the Precision Bolt from the Heavy Cannon. Once destroyed it will seek closer range with you, by launching slow projectiles with a bell curve or looking to melee you. Use Full Auto to get rid of him quickly.
  
  
• Cacodemon: Extremely dangerous at close range with their bite attack, their energy balls are also dangerous at longer range. They can even fire multiple orbs that would destroy your health bar. Hopefully, one Stick bomb or Frag grenade launched into his mouth and he will become stagger and Glory killable. Abuse that feature.
  
  
• Tentacles: Hidding in holes, they are killed very easily. Their purpose is just to down your health when beeing caught of guard. Have a bit of discipline: Approach tentacle hole one at a time, with the shotgun aiming in the middle in front of you. If there is a tentacle you will one shot it. If the hole is empty, you are safe. You can also chainsaw them.
  
  Tips to find out Tentacle placements, thanks to "Jack ♥" guide https://steamcommunity.com/sharedfiles/filedetails/?id=2055127514 but here is a sneak peak i made from the second level. You can see small cloudy bubbles:
  
  

Difficult moments:

• The corridor area behind the closed UAC door requiring a key. The first half is easy but in the second half, an Arachnotron will spawn and you will be stuck in a tiny corridor, arachnotron in front, fire traps behind. You can use the chainsaw if you saved 3 charges, or try to burst it down with the shotgun.
  
  
  
• The lobby in the UAC building with white pillars (Where the sentinel armor is, see second "Useful secret"). Cacodemons, Arachnotron and a bunch of fodder can be a pain so be ready for this fight when you are about to climb from the underground garage. Killing Cacodemons will trigger additionnal spawns so clean the other demons first.

Useful secrets:

• In a collapsed building in front of the UAC parking lot, there is a Sentinel armor behind a locked gate. You can access it via the upper floor with a bit of backtracking, or by going hard left when entering this outside area, after the church. (On screenshot: Green path to my mouse cursor, then jump towards the Slayer helmet)
  
  
  
  
• In the open lobby where you will have to fight a bunch of ennemies, after crawling up from the destroyed subway. A sentinel armor is hidden behind a closed elevator door. You can access it via the shaft, from the upper floor. (Mouse cursor on screenshot)
  
  

Exultia

Back to the Fortress you obtain the Flame Belch as well as a Sentinel Cristal. Ammunition or Health increase would be preferable to Armor in my opinion, as it is easier to regain those when you don't have the Super Shotgun Meat Hook yet. I would recommand first either "Loot Magnet" or "Belch Armor Boost" as first upgrade.

Concerning the Rune, i believe it is mostly what you like, even tho some runes are slighlty better. I would go for Saving Throw or Air Control first, the second rune being located in the next level, Cultist base. If you don't feel confident, Chrono strike might be good too. I do not like Glory kill based runes, just like i didn't like them in Doom 2016, so i do not really know if this is a viable route.

Weapons:

• Flame Belch: Dealing low damage, this equipment has the role of refulling your armor everytime you need, until you got the Super shotgun.
  
  
• Plasma Gun: Very good, high rate of fire energy weapon. It has the 'hidden' ability to quickly melt ennemy energy shields.

Ennemies:

• Gargoyle: Flying Imps, they tend to be less dangerous than their brethren. They are dangerous in melee when they get their green claws or when they fly in the air to charge multiple green projectiles. Otherwise it's fodder.
  
  
• Hell Knight: Angry tough guys, they can be easily tamed with a bloodpunch followed by the Full-Auto mode on the Shotgun. Make sure to stay away from his claws and dodge him when he jumps in the air to slam the ground by simply dashing out.
  
  
• Revenant: They can be a threat if forgotten in a fight, especially when he hovers to do his rocket barrage. You can destroy his shoulder weapons with the Precision bolt / Sticky nades, or just burst him down with Plasma gun or Shotgun. Mind that he will be a melee-only demon if you destroy his weapons.
  
  
• Purple goo is a terrible foe. When inside it, you cannot jump nor dash. Inside purple goo you are an easy prey. Avoid purple goo.
  
  
• Dread Knight:Only found in the Slayer gate in this level, he is a much more annoying version of the Hell Knight. Tankier he seem to deal higher damages. Also be careful about his charging attack that will create a red cloud around him. If you are caught within that, you will endure .. a lot. Try to never close quarter with this dude.

Difficult moments:

• After opening the three giant hellish doors, you come above a canyon where ennemies are waiting for you downwards, especially a Revenant and an Arachnotron. This might be a harsh fight, you can make it easier by sniping down those two demons.
  
  
• After exiting the first Titan' stomach, you enter an open purple goo-ed area with a few fire traps and fodder demons. In the next zone, right when you dive inside the goo, an Arachnotron will spawn in front of you. Your best chance against them is to constantly move, so i'd recommand to simply step back outside the goo and kill him safely.
  
  
• The final fight after the parkour scene, after the cutscene with the Betrayer can also be tricky. There is an Onslaught powerup in the arena tho. Focus the Arachnotron and the Hell knight with it. The Cacodemon, Revenant and fodder can be dealt with the old way.

Useful secrets:

• In Exultia, in the first small courtyard where a Hell knight will rush at you from the opened gate, you can find an armor behind a cracked wall, in the right corner in front of the entrance you took.
  
  
  
  
• Not much a secret but in the circle shaped room with fire traps, there is a max health near the ceilling, accssible on drop or via monkey bars.
  
  
  
  
• In Exultia, two Sentinel armors are hidden very close to each other, one right after taking the Double Dash. Continue just a jump away where you need to go, but turn around to see it hanging on the wall you just stepped away. The other one is located behind the Throne, after the cutscene.
  
  
  
• In Exultia, you can find the first secret encounter. Right before the teleporter leading you to hell, you can see monkey bars in the distance, leading you up to a tower with health and ammo. It is quite simple as it will spawn two cacodemons with around 20-25 seconds to kill them.
  
  
  
  
• In Hell, the second secret encounter is located right before you plug the battery inside the Atlan spear, to go throught the first Titan. It is located slighlty underneath it's back, when going down. Very easy encounter, a few Lost Souls will spawn in a corridor full of Red barrels.
  
  
  
  
• In Hell, when going inside the second Titan stomach, there is the 2nd sentinel Crystal inside the purple goo on the left. Be careful there is a tentacle in front of it.
  
  
  
  
• The Slayer gate is located in Hell, after the first area with falling platforms and burning chains. Climb up where you killed a few Gargoyles and you'll easily find the key.
  
  
  
  The first part of the gate is quite fine, a lot of imps and gargoyles will rush you but at this point it won't be that a challenge for you. Until one moment where Revenants and a Dread Knight will join the party. Be careful about that part, mind that you have lot of stuff in the arena to pick up.
  
  
• If for some reason you lack health at this point of the level, there is a max health / armor here.
  
  

Cultist base

Weapons:

• Cryo grenade: Very good equipment to either give you time or to deal with bigger threats, it is a precious weapon in fight.
  
  
• Rocket Launcher: High damage with area of effect, it is one of your best bet against heavy / super heavy demons. Both mods are good objectively, yet i'd take Lock-on-burst anytime instead of Remote Detonator.
  
  
• Super Shotgun: Your best friend, tool of destruction at close range, you should upgrade it to the maximum as soon as possible. When done, the Meat Hook will become your favored way to regain armor while having a lot of mobility.

Enemies:

• Cyborg: Angrier version of the zombies, they should be considered at a danger level between a zombie and an Imp. Still fodder to the mighty Slayer.
  
  
• Mancubus: They are one of the most dangerous ennemies at this point in the game. Target their weakpoints will make them much weaker, however keep in mind that they are very dangerous at melee range, no matter what. Even rushing with BloodPunch / Meathook is risky. Better blowing them up from afar. Also a frontal glory kill will result in an explosion. (The one where you make him swallow his heart.)
  
  
• Soldier with shield: Their shotgun is painful at close range but their shield is an advantage to you. Just melt it with the plasma gun and it will blow up like a red barrel.
  
  
• Whiplash: Angry, annoying, extremely lethal ♥♥♥♥♥, you should target them first, almost no matter what. Strong melee attack, they shoot with their whip red energy blades at a high speed with a very strong preshot on you, even if you dash. Moreover, taking one will stagger you and you most likely will take even more hits behind. Can destroy your run. Freeze Grenade + Rocket launcher or BloodPunch. Use your most deadly weapons.
  
  
• Cueball: Not much an ennemy, he won't move nor attack you. They are just a red barrel who will fly away when you shoot them, so use them wisely.
  
  
• Prowler: Only spotted in the Slayer's gate in this level, those Alpha Imps++ are something to consider during a fight. They can be evaded but will keep on pressuring you by chasing you all the time, so think about exploding them quickly. YOU should be the predator.

Difficult moments:

• The area right after picking-up the Rocket launcher can be painful. Get rid of the Mancubus or at least their weakpoints first, Cacodemons and Gargoyle are also annoying. There is a Max Health behind a coffin, in front of the rune above the arena.
  
  
• The outside arena where the Deag makes his little speech, you might have a tough time. A mix of Mancubus / Revenant / Whiplash / Arachnotron will bully you. Hopefully there is a lot of stuff downstairs as well as explosive traps you can set off.
  
  
• Another tough encounter is on the fallin platforms with spiky walls. This is a small squared arena where you won't have much space to move around. Your only advantage is that a few cueballs will spawn to help you. Mancubus will spawn at the end.
  
  
• Not that Difficult, tho be sure to open cells one by one. I reckon they are the same every games. The first in front of you are Imps/Gargoyles. The left on the bottom are soldiers. The right on the bottom is a Cacodemon. The right one is a Mancubus. Top right are supplies and a cueball. The one of the left are shotgun shells and a cueball. The top left one are Hell Knight / Arachnotron and the last one on top are Revenant / Whiplash and a few lost souls.
  
  
  
  
• The last fight, located after the fake train will be your final test. A mix of every Heavy demons you encounterd so far will be there with a bunch of fodder. Not much to say, use supplies located there and don't forget the Overdrive powerup hidden behind a lock.
  
  

Useful secrets:

• Bellow the bridge in the first area you will find on the cliff a Dope fish hanging. Shoot the mine and a Sentinel armor will be available
  
  
  
  
• In the same area, you will find on the right of the entrance where you dropped, a grid to destroy hidding a switch. This will open the jump pad bellow the bridge leading you up to a sentinel battery.
  
  
  
  
• In the area where you fight an Arachnotron and a few cyborgs and soldiers, you can open a parkour path on the right by shooting a green button. This will lead you to a sentinel armor.
  
  
  
  
• In the area right after you face the first shielded soldier, there is a cliff on your right. Fall down there then dash onto the hidden platform and smash the wall to get a sentinel armor.
  
  
  
  
• Another sentinel token is located behind a destructible wall, in the cavern.
  
  
  
  
• When coming back to the bloody plates after the red-energy-lava-parkour-thing, you will see a sentinel crystal on the middle and a secret encounter on the left. Pretty easy to deal with, fodder demons with a couple heavy with cueballs.
  
  
  
  
• A Preator token is easily spotted on your left when jumping onto the flying coffin shapped skull
  
  
  
  
• Second encounter is located further in the level in an icy cave on the right. An armor power up and two red bombs are here to help you against a couple Whiplash and a Mancubus. Pretty tight arena, be sure to set up the bombs by pushing them first. You could also rush the Mancubus to leave the corridor and safely deal with only one side.
  
  
  
  
• A max health / armor can be found in the area with tentacles and grinders. Just step onto the center grinder to reach it
  
  
  
  
• To get to the Slayer key, you got to parkour bellow the great room with the giant cross. The gate in itself is fine, the area is a bit tight but there are monkey bars and a teleporter. First Waves will have fodder, Prowlers, Cacodemons and Mancubus, the second part a bit easier imo, there are only a few Arachnotrons. Use explosives in the first part.
  
  

Doom Hunter Base

This level should feel easier than the previous ones. The curve of your stuff / the pain you can inflict outmatches the strengh of your foes. Anyway, remain on your toes.

A weapon mod Drone is in the first room of this level. At this point i took MicroMissiles, as important mods were already in my pockets for other weapons, and this one could transform the Heavy cannon from surgical weapon (Precision Bolt) to constant damage.

A bit of parkour after the first Carcass encounter and you will stumble upon the third Rune. I took Blood Fueled but Punch&Reave could also be favored.

Enemies:

• Pinky: Deadly if they hit you with their charge, they are easily dodged. Once behind them, destroy them like it's your last chance. Don't stay too close to them from behind tho as they have the habit, just like 2016, to turn/melee you to dust. Supershotgun's Meathook will stagger them.
  
  
• Carcass: More like a support demon, they can deal a decent amount of damage anyway so be careful. Avoid using Rocket launcher when you have spotted one of this fella and favor Plasma gun until you've killed him. On a side note, i recommend you to farm the Meat Hook challenge in the corridor where you meat the first Carcass, there are a LOT of free zombies for you.
  
  
• Prowlers will be officially encountered in this level. Check the Cultist base part of the guide.

Difficult moments:

• The first fight introduces you the pinky with a few other heavy demons. Not a great deal tho, a few supplies, jumppads and bombs will help you. There is also a sentinel battery secret bellow the arena.
  
  
• Another passage to consider is a serie of doors after meeting the first Prowler, where you are locked in a very tight area. The first will pop soldiers and a hell knight. Then a Prowler and a Whiplash.
  
  
• Boss Fight: The Doom Hunter being the first boss, he isn't that a huge deal. In his initial form tho he will chase you with his rockets that you must dodge. Favor Plasma rifle on his shield as destroying it will stagger him. Rocket Launcher / Sticky Bombs onto his sled might also be effective. Once in his second form, he is much much less dangerous. Weakened so much actually that i recommend you to farm fodder around to get your MeatHook fully upgraded. Before killing him make sure to refill your stuff, as the second fight is more difficult. Also, never approach him as he can dash/Chainsaw you. That hurts.
  
  The second arena will have you to fight two slightly weaker Doom Hunters. Focus on one after cleaning the fodder / heavies. You should finish the first one before engaging the second one. Favor Plasma.

Useful secrets:

• In the first room, there is a hidden Praetor token, you need to parkour backwards to get it and a sentinel armor.
  
  
  
  
• After interacting with the machine that will open a coffin with a DoomHunter wanabe inside, you can actually crawl all the way up and fall inside a pit. Hidding ammos and a token
  
  
  
  
• Bellow the red keycard area is a sentinel crystal, make sure to pick it up.
  
  
  
  
• Another token is located a bit further, behind a small encounter with Carcass/Knight/Arachnotron.
  
  
  
  
• If needed, a sentinel armor is located inside the reactor you have to climb.
  
  
  
  
• Upon arriving around the octogonal shaped electrified building, just fight all the way around to find another useful token
  
  

Super Gore Nest

Before starting the level, spend your armor token and use your 6 batteries. I would highly recommend that you buy the two Sentinel cristals bellow the Unmaykr, and an armor token. Using batteries for weapon mods is really pointless in my opinion as you will get a Weapon mod very early in the Super gore nest map, then another one shortly after finding the Chaingun. Besides you already have good mods. Concerning the armor, i took barrel explosion, dash refill and Cryo grenade.



As said before, Belch armor / Magnet first, as a third upgrade i would take Health for Blood or Quickdraw Belch, as both of them grant you Armor + Health.

Weapons:

• Balista: Long range energy weapon, i find it underpowered compared to the Gauss from Doom '16. Yet it still have it's uses ! I recommend going for Arbalest mod as this will help you a lot against Cacodemons and Pain Elementals (It deals extra damage against flying foes). Also, it will be essential to fight Marauders effectively.
  
  
• Chaingun: Pretty good to clean fodder, heavy or even super heavy, when you have spare bullets, using the chaingun is probably the best choice. Shield is fine but Mobile turret is shredding what's in front of you.

Enemies:

• Buff Totem: Not really an ennemy as it won't move or attack but you will place it's destruction at your highest priority. It will buff all surrounding demons, transforming even a stupid imp into a dangerous threat. I won't bother fight much while it is active, you should instead run and gain time until you find it. There are 2 on this map.
  
  
• Spectre: Nothing special, an """" invisible """" pinky. Hell, he attacks and dies the same way

Difficult moments:

• The very first arena. Now, i had no problems the couple times i played it on Nightmare, but when arriving on Ultra-Nightmare, i almost lost it. Revenants and especially Mancubus / Hell Knight can distract you from the presence of Whiplashes, so be careful about it. There is not many supplies nor red barrels.
  
  
• When descending into the flesh cavern, you will have to fight against your first Buff totem. This one, unlike the others, is a bit tricky because you HAVE to fight empowered demons to unlock teleporters, eventually leading you to the totem. Hopefully it's only fodder and Prowlers.
  
  
• Once arriving in front of the Super gore nest, a fight will begin in this wide arena. Good thing is that there is space to navigate, even with the gaps and lava. You also have at your disposal an Onslaught and a Max Health / Armor pick up. Keep in mind tho that you will come back in this arena later on, to fight again, even tho the ennemies will be fewer. For the first fight you will face Arachnotrons, Mancubus, Cacos, Revenant and few other fodders.
  
  
• Just after placing the yellow key in the yellow thingy, you will enter a UAC building. You will have to jump down an elevator shaft. Down there, it's a skirmish not an arena but you will be stuck in a tight corridor with a Mancubus and a Spectre. Mind rushing the Spectre on the right corridor with a cryo-grenade before things get out of hand.
  
  
• Not a regular arena but after activating the first lever for the main generator, you will be directed to a small green portal-pad. It will send you into an open area where demons will be powered-up by a totem. The said totem is located further away, you'll need to parkour your way across the arena, then jump down a shaft and finally climb again. Try to ignore the demons until you crush the totem.
  
  
• Another point of interest is a very tricky part that can end your run, just after picking up the blue key. You will have to jump down in a toxin-flooded corridor roughly shaped as a question mark.
  A Hazmat suit pick-up is further along the corridor so you have to press on but a bunch of tentacles are hidden in your way, hampering your progress. Right at the end of the corridor, still in the toxic mess, a Mancubus will block your path.
  All of this sounds trivial but when combined and if you are careless, it can be your doom.

Useful secrets:

• On the second floor of the small arena with a flesh pillar in the center, you can break a wall to jump on a Sentinel armor on another flesh pillar. This will spawn a Pinky and zombies, as well as stuff and an armor token.
  
  
  
  
• Right after picking up the Yellow key, there is a locked door on your right you have to open to continue the level as usual. Instead of going on the left, jump on your right to find another Rune, in case you want to switch.

ARC complex

(Apologies for the bad quality gifs, i found no other way. Also, a couple of Praetor token will be in plain sight as well as a second battery.)

Ennemies:

• Cyber-Mancubus: Bigger, meaner and more armored version of the fat demon you love, they are a threat to be reckon with. Blood punch will break their armor allowing you to deal damage with any weapon, otherwise a bunch of rockets will do the job.
  
  
• Marauder: One of the most dangerous ennemy in the game, those bast**** will require all your attention to fight them. Fortunately for you, internet allowed people to share their creativity in ways to kill your sentinel nemesis.
  
  Most common way involve rapidly switching between Balista and SuperShotgun. Shoot and quickly swap for the other weapon once his eyes are green. Hot Swapper praetor upgrade is very usefull with that.
  
  This is what it looks like, even tho he blocked my third shot in this clip.
  https://steamcommunity.com/sharedfiles/filedetails/?id=2112671131
  Melting him down with Lock-on-Burst was a praised strategy, yet this doesn't work anymore as of may 2020.
  https://steamcommunity.com/sharedfiles/filedetails/?id=2112639617
  If the duel gets messier, you can even use Cryo grenade to get free hit on him. Shoot the grenade over him, this will make him follow the grenade's trajectory with his shield on, fully displaying you his back.
  https://steamcommunity.com/sharedfiles/filedetails/?id=2112682228
  Marauders are deadly threats requiring so much attention, dueling them during a fight with other demons would be a foolish attempt. Your best bet is to annhilate everyone else while evading him, until you can properly fight him alone.

Difficult encounters:

• Very early on in the level, you will drop down a balcony past a Mancubus, down to a museum-like lobby. You will find down there a few fodder and two whiplashes. I prefer to warn you with this encounter because depending on their behavior when spawning, they can almost destroy you in a few seconds. 3/10
  
  
• A bit later on, after climbing on a crashed Helicopter, you will find yourself in a street with purple goo. Lots of people will be waiting you here, most notably Mancubus / Revenant / Dread Knight / Cacodemon. Also a disrespecting Carcass behind all of that. Make good use of the Bumper and the Monkey bar in the middle, to avoid the goo. 5/10
  
  
• After the cutscene showing you the two tentacles and turrets, you will go inside a building, opened by an angry Pinky. This fight will start on a staircase and end a bit further in a small lobby. The first part tho in the staircase is an encounter to be reckon with, the door behind you will be locked and you will have a few space to move around. Hell knight, Arachnotron, Revenant, Cyber-Mancubus and a few fodder will attack you. Make sure to have a lot of explosives, Blood Punch and to spawnkill the meanies. 4/10
  
  
• Skipping to a bit further in the level, when you have to climb inside a crashed Cargo. Mostly the same ennemies like before, Mancubus, Arachnotron, a few Knights and fodder will fight you until the top of the staircase. 5/10
  
  
• Right after pressing the elevator button, you will fall all the way down into a quite large arena with, well, a lot of people. This is a pretty tough encounter so you should prepare yourself, hopefully for you there is a Berserk powerup down there. First of all, Mancubus, Fodder, Pinkies and a few Prowlers will scream at you. A second wave will bring to you 4 Whiplashes, a Cyber Mancubus and a few other trashes. Use the Berserk powerup under the small bridge at this moment in the battle, and spam glory kills. I wouldn't recommend fighting them differently. 7/10 going down to 5/10 with a clever use of the Berserk.
  
  
• Fast forward when you are crawling in the basement under the Arc Complex. After a few tunnels with fodder, you will enter in a very DOOM 2016 like arena with almost every type of foe you've encountered so far. Fortunately for you, there is a LOT of supplies, especially a bit of armor on your left when entering, that you should pick up during the fight. There is also an Overdrive powerup. First waves will have fodder, Mancubus, Pinkies, Shieldyboyz, while Whiplashes, Arachnotron and Knights will spawn later on. Overdrive is less game changing than berserk, yet i would recommend you to use it on the second wave to abuse Lock-on-Burst / Minigun. The hard left corner will spawn a Cyber Mancubus at the very end of the fight. 6/10
  
  
• Very quick note but right after that you will fall into a purple gooed sewers, with two hell knights coming at you. Sounds easy but you are basically immobile in front of them.
  
  
• (Another quick note, the tunnel after the second turret cutscene will lock you with two Hell knight, and then a Dread knight once the door opens)
  
  
• Later on, you will eventually find yourself in a two level parking lot with Mancubus/Arachnotron/Whiplash/Carcass and a few fodder on the upper floor, and Cyber Mancubus and a few other trashes on the lower floor. Mega health on top, you should clear this place before going down. 6/10
  
  
• Third quick note, the bridge towards the Arc complex entrance will have a few heavies, fodders, purple goo AND an Onslaught powerup. This isn't really a hard encounter tho and you can even decide to ignore them all together
  
  
• Finally, you will have to deal with a Marauder after the cutscene with Samuel Hayden. This is mostly a 1v1 as only a few ammo pack, i mean, fodder demons, will spawn. If you can dash and use Balista/SuperShotgun combo, you'll be fine. 6/10

Useful secrets:

• In the building with a Crashed helicopter at the end, you will find down the stairs, on the far right end, a breakable window with supplies and a Praetor token.
  
  
  
  
• Right after the first enconuter with a Cyber-Mancubus, you will find a lobby with a fallen bridge. After the fight is over, jump on the other side of the lobby to reach a platform with a sentinel battery.
  
  
  
• This is a very important secret, fast forward, after the bumper down an elevator shaft. You will jump onto a new skyscrapper with a few zombies on the floor. Don't go on the right, there is a breakable wall on the right with a Sentinel Crystal.
  
  
  
  
• Right before jumping onto the crashed Cargo, you will find on your left a sneaky hidden in the plain sight, Praetor token.
  
  

Mars Core

The first part on Phobos is pretty easy and short. The only encounter that could be slightly problematic is the one of the bridge. Well at least it is worth mentioning. You'll be attacked by fodders, Pain Elemental, a Dread Knight and a Doom Hunter. However it should be no big deal most of the time.

This section of the level is also pretty much straight forward as there is no particular secrets usefull to pick up. Only a sentinel battery, located bellow the bridge heading towards the BFG 10.000, is to be considered. Accessible once you fell down the hatch.

Be careful however in the final corridor with stairs and fire leading to the BFG cutscene, a Mancubus will spawn in front of you but a Prowler will come from the back.

In the remains of Mars atmosphere, be careful about tentacles, there are a lot of them.

Weapons:

• BFG 9.000: Your savior in desperate situations or for very difficult combats, this monster will blow almost everything in a single shot. To clear more ennemies, shoot the BFG behind the demons, so it will travel in the air for longer and the electrical effect will hit more demons. Some like the Tyran can withstand one shot.

Ennemies:

• Baron of Hell: A super heavy demon, it will behave similarly to the hell knight you know very well; that is charging you most of his life to punch your face in the face. He will some times stop to shoot projectiles at you and can even jump towards you. Usually a monster that you want to destroy very fast.
  
  
• Pain Elemental: Another flying demon, this one will mostly stay far away and throw explosive lost souls at you. A moderate threat while you dodge, you should destroy it fast.
  You can quickly get rid of them with 2 Arbalest charged shot or 6 rockets (Two burst shots)

Difficult moments:

• The first really tough combat is located at the beginning of the Mars Atmosphere section of the level. Just after facing a Carcass and triggering a UAC Spokesman speech. You'll fall down in an arena with: A Buff Totem, a couple of Cacodemons and Carcasses, Hell and Dread knights followed by Whiplash and Mancubus. Also a bunch of fodder. There is not as much space to move as you'd think yet rotation is easily made, especially by the Portals you'll find. The Totem is not much a great deal, when entering rush to your left, it is located bellow your entry point. You can get rid of it at the beginning of the encounter. 5/10
  
  
  
• Once you catapulted yourself in another set of UAC buildings, you will finally have to parkour above the void, with giant red canisters. It will lead you to a bigger island with another UAC facillity; This place will have Cyborgs shooting at you from afar.
  Once you land, Two Barons of Hell and an Arachnotron will spawn with fodder. Don't hesitate to use a BFG shot as there is a refill.
  
• Nothing else is really worth mentionning until the last arena in the city of Hebeth, inside Mars Core. The arena will progressively be filled with a mix of Mancubus, Prowlers, Dread knights, Hell knights, Baron of Hell, Arachnotron and finally a Doom Hunter. Make sure to be aggresively effective.
  Once the arena is cleared a corridor full of Heavy demons will open, make sure to BFG them as there is another BFG refill ammo.

Useful secrets:

• Just after falling down a hatch on the Mars Atmosphere section of the level, right after the Buff Totem fight, you'll find on your left a breakable wall. Behind it is a Praetor token and much supplies for you. There is also a pretty easy Secret encounter. When activated, demons will spawn in the intersection behind you. A Revenant in front, fodder behind and on both sides as well as a Spectre on the left.
  
  

Sentinel Prime

The Gladiator will be your only foe in this level. Second boss of the game, the first being the DOOM Hunter.

In his first stance he has a shield negating all damage from the front. You need to attack him when he is lowering his guard to attack you, spotted by his eyes flashing green right before that. He will try to flay you with his weapon. Once enough damage have been dealt, he will be staggered and flashing blue like a glory kill. Repeat that process until his health bar is removed and the glorykill destroys his shield.

I advise you to abuse the Balista in this fight, he takes a lot from this weapon, sometimes being glory-killable in one shot.

Until he tries to attack you, just move, jump and dash around to stay alive. Don't let him hit you with his flay. He will at some point spawn a few Imps + a Prowler and later on a Hell Knight with a few soldiers.

Make sure to feed on those demons because the Boss will be, especially in the second stage, relentless against you.

Swap between Balista (against the boss) and SuperShotGun (to feed and survive) and keep dodging around, should be good enough. Also get what you need from minion demons, but mind killing them asap. Much easier to 1v1.


After his first healthbar, the Gladiator won't have a shield anymore but a second flay, he will however still protect himself from the front. He will flay you much faster and pre-shot you so be careful.

Make sure to dodge in different directions so you take less damage. Don't come close to him and mind his leap. Keep using the Balista when he lower his flays.

After some damages taken, he will create a triangular shaped area with a laser wave coming towards you. At this point i recommend you taking the rocket launcher because you can lock-on-burst the boss, while dodging the laser wave. Be sure to dodge his charge at the end of this attack.

There is a decent amount of supplies in the arena's outer ring, try to keep at least the medium armor pick-up for the 2nd phase of the boss, if you end up in a bad situation you'll love this.

Taras Nabad

Return to Argent D'nur's capital to retrieve your sword, the one you used to slain the Titan besieging the city during ancient times.

Weapons:

• The Crucible: Obtained at the very end of the level, the Slayer sword is a form of super weapon that let's you, for the cost of one Crucible Charge, one-shot any demon you decide to slash into bits. You can only store 3 charges and the resupply will be scarce, just like a BFG. Keep it for Super-Heavy demons

Ennemies:

• Archvile: A Super heavy demon who will spawn other demons and cast burning flames bellow your feet if you let him live. He can cast a directionnal magical shield and teleport away. Make sure to get rid of him first because this support demon would be your bane.

Difficult moments:

• The first engagement after opening the doors at the beginning of the level will already be a Marauder. Make sure to get rid of the Cacodemon and try to run away from Cyborgs, as their shot will trouble the Marauder's brain as he will try to parry friendly fire instead of attacking you. Marauders should be an easy task from now on, just make sure it's 1v1.
  
  
  
• When entering a giant courtyard after falling down a hole, past a Mancubus. Rush immediately the far end of the room, up the stairs. The first Archvile will spawn around here, either on the right or on the left side of the courtyard, accessible only from the large staircase opposite the entrance of the room. Delete him super fast as the room does rely on him spawning demons to make it a real fight. Otherwise it's just a medium difficulty fight.
  
  
• Affter the vision with Samur and the Divinity machine, you will enter an open area room from an upper staircase. A dreadknight will spawn on the right bellow your entry point and a Pain elemental from the upper left corner from the entry. Cyber mancubus will be also present. A second wave will follow with a DoomHunter.
  There is a BFG ammo refill, you might consider BFG the general direction of the Demons during the first wave.
  
  
• After the puzzle solving sewers you will leave a tunnel into a bigger underground arena. This will be a quite difficult fight; there is a BFG refill ammo; you should use one BFG shot (or Unmaykr bursts) during the fight.
  A mix of Whiplash, Carcass, Hell Knights and Fodder will greet you; followed by a Baron of Hell and then an Archvile.
  
  
• After retrieving the Crucible's Hilt, you will have to fight a mix of CyberMancubus, Prowlers, Cacodemon, Cyborgs and a Marauder. The Mancubus will spawn directly in front of you so burst him down. Remember that you can flee away pretty far in this room, usefull to duel the Marauder without having Cyborgs shooting at you.
  
  
• Not a big arena but i wipped here once; you will jump on a balcony looking area from a monkey bar jump. This place will have Gargoyles but most importantly Pinkies and Pain Elemental. Make sure to focus those pesky heavies
  
  
• Not really an arena either but after taking an elevator you will be on the upper level of a round tower. Pain Elemental will spawn in front of you and Cacodemons, Prowlers and Spectres will come from right and left. This can be pretty tight, you can cheese this encounter by rushing down where the Pain Elemental comes, there is an optionnal area that actually lets you have demons coming from the same direction.
  
  
• From now on, there is only medium encounters in the basements, but nothing special. The last fight is located bellow, right after reclaiming your sword.
  Now this fight is pretty hardcore. Hopefully you just received the Crucible and there are refills everywhere.
  In fact, you can kill with the sword every one of the dozen Heavy / Super heavy demon that will come to you, just make sure to pick up refill and avoid slashing fodder.
  

Nekravol

Ennemies:

• Tyran: The most durable super heavy demon out there, Tyran is a slow, bulky and powerful foe. It will require tons of damage to burst him down. On the other hand, he can shoot you with guided flames, artillery like projectiles and the most dangerous attack: a concentrated beam of light. Avoid that last part at all cost.
  Even tho they can sometimes dash, they are very slow to move, make sure to dance around.

Difficult moments:

• The very first encounter is actually tricky as a pair of Cyber Mancubus, arachnotrons and fodder will try to flood you. Take your time if needed and make sure to pick up the Sentinel crystal hidden on the left side.
  
  
• The first arena fight comes slightly after the second encounter you'll manage; the first Tyran ennemy will attack you, helped by a Cacodemon, CyberMancubus and a Whiplash. There is a Quad-Damage powerup, make sure to use it to destroy at least the two biggest threats.
  
  
• Kalibas the Sightless judge; not a big deal in theory but you never know. Shoot his eyes with precision strike or Balista shots; be careful of Gargoyles (they tend to spawn between the entrance and the middle of the arena) and Pain Elementals. Kalibas attacks are avoidable easily.
  Also, keep in mind that the platforms you sit on will sometimes burn or fall into the lava.
  
  
• Next point of friction is after a bit of parkour across a chasm, just after crossing a sentinel armor point. You'll end up in an square like arena with only the perimeter of that square accessible from bellow, while the center and one corner will be another level.
  Burning traps are located bellow so i would avoid that, a crushing trap and a BFG ammo is located on the upper floor to help you, as well as jumppads.
  
  Dreadknight, Whiplash and Carcass will spawn on the upper level first, followed by Cacodemon, Hell knight, Prowlers and a Mancubus. One of the last spawn to come is an Archvile.
  
  Think about that BFG shot
  
  
• Past a few parkour sequence and an makeshift elevator, you will find yourself in a corridor with meat grinding pillars. The room after that is filled with Heavy demons empowered by a totem, hidden in the upper platform just on the right of the entrance. Best way to proceed is to Meathook the closest demon and yeet yourself up there to rush the totem. You can meathook the Mancubus to reach the armor platform, then turn around and dash towards the totem. The rest should be easy, there is a Crucible blade refill later, so mind that.
  
  
• Just after that room, you will pass another grinder pillar corridor and arrive in a rather small corridor. You'll be locked with a Marauder and a Whiplash. Make sure to burst the later down so you can focus the Marauder as 1v1. If you didn't use the Crucible blade yet, you can easily slash the Whiplash. The ammo refill will be in the secret room bellow the Marauder fight.
  
  
• The last fight of the level; there is a BFG ammo refill before the entrance. Care because you can't access it if you enter the room. Instead, shoot the BFG from outside and pick up the ammo. Once in there, there is another Crucible blade refill.
  You will have to take care of a few fodder, Hell and Dread knights as well as Two Doom Hunters.

Nekravol - Part II

Urdak

Penultimate level of your Eternal struggle, Urdak feels like a fair challenge. A few big combats and a boss fight with some parkour in between all of that. When you know what to expect in each part of the level, it becomes really feasible.

Even the Khan Mayr boss fight is actually pretty fast, despite chances to get killed swiftly.

Enemies:

• Maykr drone: The latest ennemy to join the pool of foes, they are actually only present here in Urdak. They are dangerous in melee but the tend to just pew pew from a distance.
  Despite being a slight menace, you are very happy to see them because they are very weak when shot at the head (One shot with Precision Bolt) and will rain supplies on headshot kill.
  
  They will give you very few stuff after a glorykill however.

Difficult moments:

• The first arena comes after the cutscene with the Khan Maykr. Make sure to quickly get rid of the two Maykr drones spawning in the beginning with Precision shots. If you are quick, you will have a few seconds of respite before a wave of Mancubus, Hell Knight, Dread Knight, Whiplash and so on spawns on you.
  
  
• After some parkour in purple pipes and jumps across large gaps, you will arrive in a more reddish tube with a health pickup and a necessity to climb to progress. Just after that lies dangerous arena 2.
  There is a Rage boost totem on the left of the arena from your entry point. At the beginning, quickly dash through ennemies and grapple hook onto the Mecha Zombie in front of you; yeet yourself behind him and you should be at range for the totem.
  After that you can peacefully deal with a mix of Arachnotron, Dread knight and a DoomHunter.
  
  
• After the three giant portal rings are scattered in front of you, you will take a jump pad towards blue ring control center. This is not a real arena, a skirmish at best but tricky enough to mention it. A Revenant, Cyber Mancubus and a few fodder will corner you in the landing pad; all-in your left threats as they are softer to kill. Once the area is cleared, a Marauder will spawn in front of the command room door.
  
  
• Yet another difficult time is the arena just after you leave the blue ring command center (After the pair of Cacodemon).
  You will arrive on an arena with a few Maykr drones, an Archvile (that you should focus hard), followed by Mancubus / Dread knight and Pain elemental.
  Moderately difficult fight, try to kill the threats fast. There is a spare BFG ammo, however you should keep it for the next fight.
  
  
• When using the left jump pad just after the previous engagement, it will bring you in front of the Purple ring command room. There is a rage totem, it is located on the very left of the arena, past a chasm. When arriving from the jump pad, you can actually yeet yourself already towards this direction, instead of landing on the right side of the arena.
  
  Once the totem is destroyed, you will stil have to fight a mish-mash of Cybermancubus, Prowler, Whiplash, Knights and a Tyran. Consider using a BFG shot (there is one refill in the previously mentionned arena). There is a maximum health pick-up in the center of the arena. Don't hesitate to take your time and safely trade during the fight.
  
  
• The final difficult arena is located after a big parkour distance is travelled, just in front of the Gold ring command room.
  
  A mix of several CyberMancubus, Barons of Hell, Maykr Drone, Prowlers, Cacodemons, Revenants will all-in you. They only upside for you is the eventual presence of Portals to evade the demons wrath. Good luck
  
  
  
• BOSS FIGHT: The Khan Maykr:
  
  Actually not that intimidating, the Khan Maykr is quite squishy. On ultra-nightmare, around 7 rockets will empty one health bar. Follow that by a meathook + bloodpunch combo to break her life bar.
  Avoid her yellow slash attacks as well as her purple circle shot. She will occasionnaly shout and call a burning laser from the skies, avoid that at all cost.
  Finally, the more you destroy her health bars; the larger the burning area on the ground will be. Make sure to just avoid those places, at one point the "under" area will be unaccessible.
  
  Make sure to abuse Maykr drones to refill health and ammo, if you need armor you HAVE to burn them otherwise they won't drop.
  
  KEEP MOVING AND JUMPING

Useful secrets:

• One Crucible blade refill in the very beginning of the level, after the initial jump pad.

Final sin

Here you are, in the ashes of mankind. Chasing a Titan. The final battle.

Difficult moments:

• The first arena is located at the beginning of the level. You will enter a rooftop with battling demons, a few supplies, jump pad and monkeybars will help you. Separated in multiple waves, this long fight will bring you a mix of fodders, arachnotron, mancubus, knights, revenants, a Baron of hell, whiplashes, flying demons, a Tyran will join the jolly battle at one point and the last of the spawns will be a Doomhunter.
  For confort i recommend having a swing of crucible blade on the Baron of Hell (If you began the level with 3 charge, you can also execute another large demon like a CyberMancubus or the Tyran). Consider using a BFG shot in the middle of the fight for extra survivability because there is a refill ammo later on.
  
  
• More of a skirmish than a brutal arena but the building you reach after jumping on some window cleaning platforms will have whiplash, fodder and a pinky thrown suddenly at you with a rage totem located in front, slightly left, of the entrance. Might take you offguard so worth mentioning. This place also has the BFG ammo mentioned in the previous point.
  
  
• The top of the skyscrapper waits you with a moderately hard engagement, only fodder, arachnotron, cacodemon and a revenant will be there; followed just after that by another revenant and a Marauder. This place gives you refill for the Slayer Sword.
  
  It actually is really manageable and it was a breeze during some of my nightmare run, but it ended one of my ultra-nightmare attempt. Some corners are squared shaped, enough to block you and i had the curse of having a Reinforced revenant hitting almost all his shot during the second i was blocked. Add the marauder rushing me and a silly Gargoyle blocking my dash on the side and see ya.
  
  
  
• The following bit is a very hardcore arena. It is the next skyscrapper you jump into from a nearby roof. I recommend using at least one BFG shot (potentially 2) and at least one (most likely 2) sword swing.
  
  Demons will be already present, a mix of Tyran, Mancubus, Arachnotron and fodders will great you. Be careful because a Baron of Hell might quickly crawl from behind you. There is a jump pad in the center, use it to get on the balcony in a left u-turn direction from the way you came. A rage totem will appear around this location, a bit on the right side near a pillar.
  
  Along side the totem, a generous mix of several Tyran, Baron, Mancubus, Pinky, Cacodemon and various other things will rush at you. Serve brutality without restrictions.
  
  Once the main fight is over, mind that another Baron of Hell with various demons will be located as skirmish encounters a bit above you.
  
  
  
• Finally the last difficult arena (well the last arena to begin with) will be located above the previously mentionned skyscrapper. A lot of demons will be already fighting in the room and a BFG ammo is located in the entrance. I recommend you to clear them out with the BFG.
  
  After that, various middle sized demons will spawn followed by a Marauder and then an Archvile. Deal with them as soon as possible, consider a sword or BFG shot for the Archvile.
  
  
  
• BOSS FIGHT: The Icon of Sin:
  
  A towering titan of hate, warping reality around it until the Earth and the entire universe falls into the maw of the resulting Black hole. Stop it with violence.
  
  The first phase will be actually pretty manageable, i recommend you to hang around top floor behind the walls and jump around when you decide to attack. You can also explore bellow floors for supply or zombies Avoid his attacks where he slams or punches a specific location of the arena because they HURT. Some heavy demons might crawl their way up to you, don't ignore them for too long.
  
  For maximum damage against the Icon, mind using Rocket Launcher, Mobile Turret Minigun or Overheated Plasma gun (Red Plasma is a MENACE). The arena is generous with crucible blade refill and some BFG ammo. Keep the first for the heavy demons and the latter for the boss.
  
  The icon has 8 pieces of armor that you should destroy to move on the second stage.
  Once destroyed, the Icon will leave and a massive green portal will open, jump in it to get to the final part of the game.
  
  Immediately leave the platform you land on, the Icon will run out of the fog a smash this place.
  
  After that, you will have to destroy his body, focus the same 8 locations with the same methods. Mind the BFG.
  
  However, he has new attacks, a burning energy laser from his head and a purple pentagram-like rune floating towards you. Needless to say that you should avoid that. He will continue to smash some places of the arena, avoid that at all cost.
  
  The icon can now move around the building, the under back part of the arena is mostly safe. The boss can also summon a meteorite shower to explode on the battlefield, mind that.
  
  During the entire fight and regularly, Mancubus, Revenants and Baron of Hell will spawn and attack you. Don't be scared to spend crucible blade swings at the Baron to give you time to breath or dps the boss. There are a few refills in the arena.
  
  Try to stay alive and well loaded and then focus the boss. Don't overextend too much, better to aim for a longer fight than a run reset.
  
  Best of luck Slayers.

Other material to help you on your run

Strengthen your game knowledge by multiplying your sources of information, promoting different playstyles to find the one that fits you best. Check out these guides, especially the first one that is a much more in-depth guide for Ultra-Nightmare:

https://steamcommunity.com/sharedfiles/filedetails/?id=2093154742
https://steamcommunity.com/sharedfiles/filedetails/?id=2053280169
https://steamcommunity.com/sharedfiles/filedetails/?id=2056376398

Updates

2024: (Came back to DooM Eternal); Made some changes to Super Gore Nest and Arc Complex as well as what i think about the runes.
Added Nekravol, Urdak and Final Sin

2020: Added all the levels from Hell on Earth up to Sentinel Prime

[sky]

i am studying doom eternal more than i study school lessons

[Shadester]

Good guide!

[FreeMetal]

Play it safe then, don't stress while attempting U-N, make sure to practice :)

[Wolfium]

Yeah I don't really like cheating all that much, I like 100% completing games to prove myself, not really just to show it off.

[FreeMetal]

I know in 2016 you can copy paste someone else save into your folder, maybe that works too with Eternal ? So you reach end level or whatever easily. I'm speculating haha, trying to beat it yourself might be easier.

[Wolfium]

Someone else's save? What do you mean exactly?

[FreeMetal]

Make sure to practice a lot in Nightmare mode before hand, level by level, encounter by encounter. If you're really into getting this achievement, maybe there is a way getting this using someone else save ?

[Wolfium]

I've been playing Doom for 16 hours-ish and have just now gotten close to the end, I don't think I'll ever really be able to finish this, not to mention I'm playing on Hurt me plenty, which I am being hurt plenty, and that's normally not what you want when one death means you have to restart the entire game. It just really sucks because I'm a completionist and there's an achievement locked behind Ultra Nightmare, although if I eventually get good enough at the game to think I could attempt this, I'm reading through this again.

[soot]

@JoeBarnes
I really like your guide, I hope this guide manages to make it to Final Sin, if I ever git gud I could probably make a TAG 1 and TAG 2 guide.

[Joelfett]

I figured this out while playing the Gorenest master level on UV but if you bloodpunch a cyber mancubus and meathook them with the supershotgun then shoot them while close they will stagger