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46 of 69 (67%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 19 Jun, 2014 @ 9:55am

Malcontent

Escape the apartment block raid.
Unlocked 19 Jun, 2014 @ 10:03am

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 24 Nov @ 4:36pm

Trusty Hardware

Get the crowbar.
Unlocked 19 Jun, 2014 @ 10:14am

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 24 Nov @ 5:06pm

Anchor's Aweigh!

Get the airboat.
Unlocked 24 Nov @ 5:41pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 24 Nov @ 6:33pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 24 Nov @ 6:43pm

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 24 Nov @ 6:59pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 24 Nov @ 6:58pm

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 24 Nov @ 7:03pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 26 Nov @ 8:08am

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 26 Nov @ 9:08am

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 26 Nov @ 8:47am

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 26 Nov @ 3:23pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 26 Nov @ 3:17pm

Flushed

Kill an enemy with a toilet.
Unlocked 27 Nov @ 5:10am

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 27 Nov @ 4:38am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 27 Nov @ 4:57am

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 27 Nov @ 5:32am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 27 Nov @ 1:11pm

Counter-Sniper

Kill all of the snipers in City 17.
Unlocked 27 Nov @ 1:42pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 27 Nov @ 2:09pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 27 Nov @ 2:49pm

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked 27 Nov @ 3:11pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 27 Nov @ 3:31pm

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 27 Nov @ 5:11pm

Containment

Contain the Citadel core.
Unlocked 27 Nov @ 5:23pm

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 27 Nov @ 6:01pm

Live Bait

Help Alyx snipe 30 enemies in Episode One.
Unlocked 28 Nov @ 4:30pm

Attica!

Destroy the gunship in the hospital attic.
Unlocked 28 Nov @ 5:04pm

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 28 Nov @ 5:43pm

Escape From City 17

Escape City 17 with Alyx.
Unlocked 28 Nov @ 5:50pm

Acid Reflex

Kill an acid antlion worker.
Unlocked 29 Nov @ 2:26am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 29 Nov @ 2:54am

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 29 Nov @ 4:39am

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 29 Nov @ 4:58pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 29 Nov @ 5:40am

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 29 Nov @ 10:34am

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 29 Nov @ 10:51am

Little Rocket Man

Send the garden gnome into space.
Unlocked 29 Nov @ 5:55pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 29 Nov @ 4:29pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 29 Nov @ 5:02pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 29 Nov @ 2:41am

Grave Robber

Steal a Zombine's grenade.
Unlocked 28 Nov @ 6:01pm

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 28 Nov @ 5:53pm



Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

OSHA Violation

Kill 3 enemies using the crane.

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.

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.

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.

Cache Checker

Find every radar cache in chapter Under The Radar.

Pedal to the Metal

Beat DOG in a race to the White Forest base.

Gordon Propelled Rocket

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

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.
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