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

Defiant

Hit the trashcan cop with the can.
Unlocked 2 Feb, 2012 @ 9:44pm

Submissive

Put the can in the trash.
Unlocked 21 Feb, 2012 @ 8:48pm

Malcontent

Escape the apartment block raid.
Unlocked 26 Jan @ 7:38am

Trusty Hardware

Get the crowbar.
Unlocked 2 Feb, 2012 @ 10:04pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 3 Feb, 2012 @ 8:20pm

Anchor's Aweigh!

Get the airboat.
Unlocked 3 Feb, 2012 @ 8:53pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 11 Feb, 2012 @ 7:48am

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 11 Feb, 2012 @ 8:04am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 11 Feb, 2012 @ 8:01am

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 13 Feb, 2017 @ 8:58pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 13 Feb, 2017 @ 8:58pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 29 Oct, 2017 @ 8:42am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 5 Feb, 2012 @ 12:43am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 20 Dec, 2010 @ 11:01pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 18 Nov @ 6:30pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 18 Nov @ 6:59pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 18 Nov @ 8:09pm

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 20 Nov @ 4:24am

Containment

Contain the Citadel core.
Unlocked 20 Nov @ 4:31am

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 20 Nov @ 4:54am

Acid Reflex

Kill an acid antlion worker.
Unlocked 20 Nov @ 4:57pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 20 Nov @ 5:13pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 20 Nov @ 5:48pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 20 Nov @ 6:14pm

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.
Unlocked 20 Nov @ 6:25pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 20 Nov @ 6:32pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 20 Nov @ 6:47pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 20 Nov @ 6:41pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 20 Nov @ 7:02pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 20 Nov @ 7:27pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 20 Nov @ 5:06pm

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 @ 4:47pm



What cat?

Break the mini-teleporter in Kleiner's lab.

Two Points

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

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

OSHA Violation

Kill 3 enemies using the crane.

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.

One Man Army

Destroy six gunships in Half-Life 2.

Keep Off the Sand!

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

Bug Hunt

Use the antlions to kill 50 enemies.

Flushed

Kill an enemy with a toilet.

Warden Freeman

Survive the second turret standoff in Nova Prospekt.

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.

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.

Live Bait

Help Alyx snipe 30 enemies in Episode One.

Attica!

Destroy the gunship in the hospital attic.

Citizen Escort

Don't let any citizens die when escorting them to the escape train.

Escape From City 17

Escape City 17 with Alyx.

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.

Hit and Run

Run over 20 enemies with the car in Episode Two.

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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