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18 of 33 (55%) achievements earned:

Personal Achievements
 
Unlocked Aug 12, 2016 @ 5:41pm

Defiant

Hit the trashcan cop with the can.
Unlocked Aug 12, 2016 @ 5:49pm

Malcontent

Escape the apartment block raid.
Unlocked Aug 12, 2016 @ 6:00pm

Trusty Hardware

Get the crowbar.
Unlocked Aug 12, 2016 @ 6:16pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked Aug 12, 2016 @ 7:10pm

Anchor's Aweigh!

Get the airboat.
Unlocked Aug 12, 2016 @ 8:26pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked Aug 12, 2016 @ 9:22pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked Aug 12, 2016 @ 9:45pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked Aug 12, 2016 @ 10:54pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked Aug 13, 2016 @ 12:02am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked Aug 12, 2016 @ 11:50pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked Aug 13, 2016 @ 9:11pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked Aug 13, 2016 @ 5:00pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked Aug 13, 2016 @ 5:48pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked Aug 13, 2016 @ 6:08pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked Aug 13, 2016 @ 6:57pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked Aug 13, 2016 @ 7:25pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked Aug 13, 2016 @ 9:03pm

Fight the Power

Shut down the supression device by disabling its generators.



What cat?

Break the mini-teleporter in Kleiner's lab.

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.

Keep Off the Sand!

Cross the antlion beach in chapter Sandtraps without touching the sand.

Flushed

Kill an enemy with a toilet.

Counter-Sniper

Kill all of the snipers in City 17.

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.

Lambda Locator

Find all lambda caches in Half-Life 2.

Hack Attack!

Kill five enemies with a Manhack.
+2

2 hidden achievements remaining

Details for each achievement will be revealed once unlocked