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36 of 69 (52%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 1 Dec @ 9:11am

Malcontent

Escape the apartment block raid.
Unlocked 1 Dec @ 9:19am

Trusty Hardware

Get the crowbar.
Unlocked 1 Dec @ 9:32am

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 1 Dec @ 9:52am

Anchor's Aweigh!

Get the airboat.
Unlocked 2 Dec @ 12:32am

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 2 Dec @ 1:12am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 2 Dec @ 1:25am

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 2 Dec @ 2:37am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 2 Dec @ 3:51am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 2 Dec @ 4:19am

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 2 Dec @ 4:42am

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 2 Dec @ 4:11am

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 4 Dec @ 6:36am

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 2 Dec @ 9:27pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 2 Dec @ 10:43pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 2 Dec @ 11:01pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 3 Dec @ 8:44am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 3 Dec @ 9:05am

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 4 Dec @ 6:31am

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 4 Dec @ 8:42am

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 4 Dec @ 9:23am

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 4 Dec @ 10:06am

Containment

Contain the Citadel core.
Unlocked 4 Dec @ 10:10am

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 4 Dec @ 7:31pm

Live Bait

Help Alyx snipe 30 enemies in Episode One.
Unlocked 4 Dec @ 7:48pm

Attica!

Destroy the gunship in the hospital attic.
Unlocked 4 Dec @ 8:28pm

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 5 Dec @ 8:52am

Escape From City 17

Escape City 17 with Alyx.
Unlocked 5 Dec @ 9:07am

Acid Reflex

Kill an acid antlion worker.
Unlocked 5 Dec @ 9:28am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 5 Dec @ 9:48am

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 11 Dec @ 5:43am

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 11 Dec @ 5:32am

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 11 Dec @ 6:00am

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 11 Dec @ 6:47am

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 5 Dec @ 9:37am

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 5 Dec @ 9:09am



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.

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.

Hack Attack!

Kill five enemies with a Manhack.

Pacifist

Contain the Citadel core without killing any stalkers.

Car Crusher

Use the cars to squash 15 antlions 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.

Twofer

Defeat both antlion guards outside the White Forest.

Hit and Run

Run over 20 enemies with the car in Episode Two.

Meet the Hunters

Survive the Hunter ambush with Alyx.

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.

Gunishment!

Destroy the Combine Autogun in the junkyard.

Cache Checker

Find every radar cache in chapter Under The Radar.

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.

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.
+1

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