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44 of 69 (64%) achievements earned:
Personal Achievements
 

Submissive

Put the can in the trash.
Unlocked 6 Feb, 2016 @ 12:03pm

Malcontent

Escape the apartment block raid.
Unlocked 6 Feb, 2016 @ 12:11pm

Trusty Hardware

Get the crowbar.
Unlocked 6 Feb, 2016 @ 12:23pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 6 Feb, 2016 @ 12:36pm

Anchor's Aweigh!

Get the airboat.
Unlocked 6 Feb, 2016 @ 1:10pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 7 Feb, 2016 @ 4:38am

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 17 Nov @ 11:02am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 25 Feb, 2016 @ 5:52am

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 17 Nov @ 11:17am

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 25 Feb, 2016 @ 6:08am

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 17 Nov @ 11:19am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 29 Feb, 2016 @ 6:40am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 1 Jan @ 7:24am

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 29 Feb, 2016 @ 7:44am

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 6 Mar, 2016 @ 9:35pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 1 Jan @ 12:14pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 6 Mar, 2016 @ 7:51am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 2 Jan @ 8:21am

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 6 Mar, 2016 @ 3:07pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 6 Mar, 2016 @ 3:45pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 6 Mar, 2016 @ 9:30pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 8 Mar, 2016 @ 10:25am

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 8 Mar, 2016 @ 11:33am

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 2 Jan @ 9:25am

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 19 Nov @ 7:23am

Containment

Contain the Citadel core.
Unlocked 19 Nov @ 7:33am

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 19 Nov @ 9:55am

Attica!

Destroy the gunship in the hospital attic.
Unlocked 19 Nov @ 10:51am

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 22 Nov @ 4:50am

Escape From City 17

Escape City 17 with Alyx.
Unlocked 19 Nov @ 11:45am

Acid Reflex

Kill an acid antlion worker.
Unlocked 19 Nov @ 12:07pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 19 Nov @ 1:44pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 20 Nov @ 9:01am

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 20 Nov @ 12:26pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 20 Nov @ 9:48am

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 20 Nov @ 10:09am

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 20 Nov @ 10:28am

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 20 Nov @ 10:35am

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 20 Nov @ 10:14am

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 20 Nov @ 10:25am

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 20 Nov @ 12:10pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 20 Nov @ 12:29pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 19 Nov @ 1:44pm

Gnome Alone

If you are reading this achievement, Gabe Newell has successfully launched Gnome Chompski into space. If you did not also receive the achievement 'Manufacturing Ascent', Newell has abandoned his plans to shoot Noam Chomsky into space.
Unlocked 19 Nov @ 11:45am



What cat?

Break the mini-teleporter in Kleiner's lab.

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.

Atomizer

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

Lambda Locator

Find all lambda caches in Half-Life 2.

Pacifist

Contain the Citadel core without killing any stalkers.

Car Crusher

Use the cars to squash 15 antlions in Episode One.

Live Bait

Help Alyx snipe 30 enemies in Episode One.

The One Free Bullet

Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!

Conservationist

Kill five enemies with the same energy ball.

Think Fast!

Kill an Elite Soldier with his own energy ball.

Zombie-que

Use flares to light 15 zombies on fire.

Get Some Grub

Squish every antlion grub in Episode Two.

Piñata Party

Find and break every web cache in Episode Two.

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.

Little Rocket Man

Send the garden gnome into space.

Neighborhood Watch

Save all buildings outside the missile silo from destruction.

Payback

Kill a Hunter with its own flechettes.

Bone Breaker

Kill 30 enemies with thrown physics objects.

Hot Potat0wned

Kill a Combine soldier with his own grenade.

Grave Robber

Steal a Zombine's grenade.
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