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45 of 69 (65%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 26 Mar, 2016 @ 5:01pm

Submissive

Put the can in the trash.
Unlocked 23 Jun, 2015 @ 10:01am

Malcontent

Escape the apartment block raid.
Unlocked 23 Jun, 2015 @ 10:12am

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 15 Aug, 2015 @ 9:51am

Trusty Hardware

Get the crowbar.
Unlocked 23 Jun, 2015 @ 10:29am

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 23 Jun, 2015 @ 11:08am

Anchor's Aweigh!

Get the airboat.
Unlocked 23 Jun, 2015 @ 11:55am

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 28 Jun, 2015 @ 2:07pm

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 29 Jun, 2015 @ 1:43am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 28 Jun, 2015 @ 2:40pm

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 29 Jun, 2015 @ 2:02am

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 29 Jun, 2015 @ 2:02am

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 15 Aug, 2015 @ 9:42am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 29 Jun, 2015 @ 3:26am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 29 Jun, 2015 @ 4:44am

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 23 May, 2022 @ 1:32am

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 29 Jun, 2015 @ 4:16am

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 29 Jun, 2015 @ 7:35am

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 29 Jun, 2015 @ 8:05am

Flushed

Kill an enemy with a toilet.
Unlocked 29 Jun, 2015 @ 7:48am

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 29 Jun, 2015 @ 9:50am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 29 Jun, 2015 @ 10:20am

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 30 Jun, 2015 @ 4:27am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 5 Jul, 2015 @ 5:37am

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 23 May, 2022 @ 6:58am

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 5 Jul, 2015 @ 4:18am

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked 5 Jul, 2015 @ 4:47am

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 5 Jul, 2015 @ 5:27am

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 30 Jun, 2015 @ 4:13am

Acid Reflex

Kill an acid antlion worker.
Unlocked 15 Nov @ 2:53pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 15 Nov @ 2:53pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 15 Nov @ 2:53pm

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 15 Nov @ 2:53pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 15 Nov @ 2:53pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 15 Nov @ 2:53pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 15 Nov @ 2:53pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 15 Nov @ 2:53pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 15 Nov @ 2:53pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 15 Nov @ 2:53pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 15 Nov @ 2:53pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 15 Nov @ 2:53pm

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 15 Nov @ 2:53pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 15 Nov @ 2:53pm

Grave Robber

Steal a Zombine's grenade.
Unlocked 15 Nov @ 2:53pm

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 15 Nov @ 2:53pm



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.

Counter-Sniper

Kill all of the snipers in City 17.

Lambda Locator

Find all lambda caches in Half-Life 2.

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.

Containment

Contain the Citadel core.

Pacifist

Contain the Citadel core without killing any stalkers.

Car Crusher

Use the cars to squash 15 antlions in Episode One.

Elevator Action

Survive long enough to get on the parking garage elevator.

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.

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.

Hot Potat0wned

Kill a Combine soldier with his own grenade.