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59 of 69 (86%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 18 Nov @ 7:49am

Malcontent

Escape the apartment block raid.
Unlocked 18 Nov @ 7:56am

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 18 Nov @ 8:04am

Trusty Hardware

Get the crowbar.
Unlocked 18 Nov @ 8:08am

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 18 Nov @ 10:32am

Anchor's Aweigh!

Get the airboat.
Unlocked 18 Nov @ 11:20am

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 18 Nov @ 12:05pm

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 18 Nov @ 12:22pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 18 Nov @ 12:18pm

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 18 Nov @ 12:38pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 18 Nov @ 12:37pm

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 18 Nov @ 12:43pm

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.
Unlocked 18 Nov @ 1:44pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 18 Nov @ 1:39pm

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 19 Nov @ 8:46am

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 19 Nov @ 10:02am

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 19 Nov @ 8:40am

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 19 Nov @ 11:47am

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 19 Nov @ 11:37am

Flushed

Kill an enemy with a toilet.
Unlocked 19 Nov @ 12:03pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 19 Nov @ 1:12pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 19 Nov @ 1:31pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 20 Nov @ 3:02am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 20 Nov @ 3:26am

Counter-Sniper

Kill all of the snipers in City 17.
Unlocked 20 Nov @ 3:50am

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 20 Nov @ 4:32am

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 20 Nov @ 5:04am

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked 20 Nov @ 5:26am

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 20 Nov @ 6:18am

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 20 Nov @ 2:52am

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 20 Nov @ 6:41am

Containment

Contain the Citadel core.
Unlocked 20 Nov @ 6:57am

Pacifist

Contain the Citadel core without killing any stalkers.
Unlocked 20 Nov @ 6:57am

Car Crusher

Use the cars to squash 15 antlions in Episode One.
Unlocked 20 Nov @ 7:32am

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 20 Nov @ 8:00am

Live Bait

Help Alyx snipe 30 enemies in Episode One.
Unlocked 20 Nov @ 8:16am

Attica!

Destroy the gunship in the hospital attic.
Unlocked 20 Nov @ 8:59am

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 20 Nov @ 9:54am

Escape From City 17

Escape City 17 with Alyx.
Unlocked 20 Nov @ 9:57am

The One Free Bullet

Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!
Unlocked 20 Nov @ 9:57am

Think Fast!

Kill an Elite Soldier with his own energy ball.
Unlocked 20 Nov @ 6:31am

Zombie-que

Use flares to light 15 zombies on fire.
Unlocked 20 Nov @ 8:00am

Acid Reflex

Kill an acid antlion worker.
Unlocked 20 Nov @ 10:43am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 20 Nov @ 11:03am

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 22 Nov @ 11:34am

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 22 Nov @ 12:48pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 22 Nov @ 12:32pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 22 Nov @ 12:46pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 22 Nov @ 1:10pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 22 Nov @ 1:14pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 22 Nov @ 12:49pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 22 Nov @ 1:05pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 22 Nov @ 1:35pm

Neighborhood Watch

Save all buildings outside the missile silo from destruction.
Unlocked 22 Nov @ 2:34pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 22 Nov @ 2:34pm

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 20 Nov @ 11:26am

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 20 Nov @ 10:51am

Grave Robber

Steal a Zombine's grenade.
Unlocked 20 Nov @ 11:14am

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 20 Nov @ 9:59am



Keep Off the Sand!

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

Lambda Locator

Find all lambda caches in Half-Life 2.

Conservationist

Kill five enemies with the same energy ball.

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.

Payback

Kill a Hunter with its own flechettes.

Hot Potat0wned

Kill a Combine soldier with his own grenade.
+1

1 hidden achievement remaining

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