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66 of 69 (96%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 5 Dec, 2021 @ 6:26am

Submissive

Put the can in the trash.
Unlocked 20 Nov @ 6:31am

Malcontent

Escape the apartment block raid.
Unlocked 5 Dec, 2021 @ 6:29am

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 5 Dec, 2021 @ 6:33am

Trusty Hardware

Get the crowbar.
Unlocked 5 Dec, 2021 @ 6:40am

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 20 Nov @ 7:41am

Anchor's Aweigh!

Get the airboat.
Unlocked 20 Nov @ 8:09am

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 20 Nov @ 8:38am

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 20 Nov @ 10:42pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 20 Nov @ 10:40pm

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 20 Nov @ 11:42pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 20 Nov @ 11:42pm

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 20 Nov @ 11:48pm

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.
Unlocked 21 Nov @ 12:29am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 21 Nov @ 12:23am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 21 Nov @ 8:20am

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 21 Nov @ 8:52am

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 21 Nov @ 8:14am

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 23 Nov @ 1:28am

Keep Off the Sand!

Cross the antlion beach in chapter Sandtraps without touching the sand.
Unlocked 22 Nov @ 11:06pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 23 Nov @ 1:25am

Flushed

Kill an enemy with a toilet.
Unlocked 23 Nov @ 1:37am

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 23 Nov @ 2:33am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 23 Nov @ 7:21am

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 24 Nov @ 1:21am

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 24 Nov @ 1:50am

Counter-Sniper

Kill all of the snipers in City 17.
Unlocked 24 Nov @ 2:08am

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 24 Nov @ 6:39am

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 24 Nov @ 7:04am

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked 24 Nov @ 7:18am

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 24 Nov @ 7:56am

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 23 Nov @ 1:39am

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 25 Nov @ 8:11am

Containment

Contain the Citadel core.
Unlocked 25 Nov @ 8:27am

Pacifist

Contain the Citadel core without killing any stalkers.
Unlocked 25 Nov @ 8:27am

Car Crusher

Use the cars to squash 15 antlions in Episode One.
Unlocked 25 Nov @ 9:57am

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 25 Nov @ 10:11am

Live Bait

Help Alyx snipe 30 enemies in Episode One.
Unlocked 25 Nov @ 10:25am

Attica!

Destroy the gunship in the hospital attic.
Unlocked 25 Nov @ 10:48am

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 27 Nov @ 9:00pm

Escape From City 17

Escape City 17 with Alyx.
Unlocked 27 Nov @ 9:09pm

The One Free Bullet

Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!
Unlocked 27 Nov @ 9:09pm

Conservationist

Kill five enemies with the same energy ball.
Unlocked 25 Nov @ 8:15am

Think Fast!

Kill an Elite Soldier with his own energy ball.
Unlocked 25 Nov @ 8:00am

Zombie-que

Use flares to light 15 zombies on fire.
Unlocked 25 Nov @ 10:10am

Acid Reflex

Kill an acid antlion worker.
Unlocked 28 Nov @ 12:30am

Get Some Grub

Squish every antlion grub in Episode Two.
Unlocked 1 Dec @ 2:33am

Piñata Party

Find and break every web cache in Episode Two.
Unlocked 30 Nov @ 5:09am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 30 Nov @ 4:35am

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 30 Nov @ 5:22am

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 2 Dec @ 4:46am

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 2 Dec @ 4:09am

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.
Unlocked 2 Dec @ 4:33am

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 2 Dec @ 4:42am

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 2 Dec @ 5:06am

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 2 Dec @ 7:12am

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 2 Dec @ 4:47am

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 2 Dec @ 4:58am

Little Rocket Man

Send the garden gnome into space.
Unlocked 2 Dec @ 7:12am

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 2 Dec @ 7:31am

Payback

Kill a Hunter with its own flechettes.
Unlocked 1 Dec @ 6:25am

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 30 Nov @ 4:25am

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 30 Nov @ 4:12am

Hot Potat0wned

Kill a Combine soldier with his own grenade.
Unlocked 2 Dec @ 7:28am

Grave Robber

Steal a Zombine's grenade.
Unlocked 30 Nov @ 5:30am

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 27 Nov @ 9:13pm



Lambda Locator

Find all lambda caches in Half-Life 2.

Neighborhood Watch

Save all buildings outside the missile silo from destruction.

Defense of the Armament

Save the missile silo from the Combine offensive.