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57 of 69 (83%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 18 Jun, 2023 @ 1:45pm

Submissive

Put the can in the trash.
Unlocked 9 Sep, 2023 @ 8:09pm

Malcontent

Escape the apartment block raid.
Unlocked 18 Jun, 2023 @ 2:05pm

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 18 Jun, 2023 @ 2:13pm

Trusty Hardware

Get the crowbar.
Unlocked 18 Jun, 2023 @ 5:06pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 19 Jun, 2023 @ 5:47pm

Anchor's Aweigh!

Get the airboat.
Unlocked 22 Jun, 2023 @ 10:16am

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 23 Jun, 2023 @ 3:12pm

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked 11 Jul, 2023 @ 10:15am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 23 Jun, 2023 @ 3:40pm

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 9 Sep, 2023 @ 8:41pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 25 Jun, 2023 @ 7:31am

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 9 Sep, 2023 @ 8:50pm

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.
Unlocked 10 Sep, 2023 @ 10:59am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 25 Jun, 2023 @ 9:08am

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 6 Jul, 2023 @ 5:36pm

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 9 Sep, 2023 @ 8:30pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 6 Jul, 2023 @ 5:16pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 14 Aug, 2023 @ 4:48pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 11 Jul, 2023 @ 9:57am

Flushed

Kill an enemy with a toilet.
Unlocked 16 Aug, 2023 @ 10:56am

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 20 Aug, 2023 @ 9:32am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 20 Aug, 2023 @ 10:21am

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 26 Aug, 2023 @ 6:05pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 26 Aug, 2023 @ 6:40pm

Counter-Sniper

Kill all of the snipers in City 17.
Unlocked 25 Jun @ 2:02pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 8 Sep, 2023 @ 8:56am

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 9 Sep, 2023 @ 6:54pm

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked 9 Sep, 2023 @ 7:21pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 9 Sep, 2023 @ 7:52pm

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 16 Aug, 2023 @ 11:10am

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 24 Nov @ 12:04pm

Containment

Contain the Citadel core.
Unlocked 24 Nov @ 12:04pm

Car Crusher

Use the cars to squash 15 antlions in Episode One.
Unlocked 24 Nov @ 12:04pm

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 24 Nov @ 12:04pm

Live Bait

Help Alyx snipe 30 enemies in Episode One.
Unlocked 24 Nov @ 12:04pm

Attica!

Destroy the gunship in the hospital attic.
Unlocked 24 Nov @ 12:04pm

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 24 Nov @ 12:04pm

Escape From City 17

Escape City 17 with Alyx.
Unlocked 24 Nov @ 12:04pm

Think Fast!

Kill an Elite Soldier with his own energy ball.
Unlocked 24 Nov @ 12:04pm

Acid Reflex

Kill an acid antlion worker.
Unlocked 24 Nov @ 12:04pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 24 Nov @ 12:04pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 24 Nov @ 12:04pm

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 24 Nov @ 12:04pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 24 Nov @ 12:04pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 24 Nov @ 12:04pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 24 Nov @ 12:04pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 24 Nov @ 12:04pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 24 Nov @ 12:04pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 24 Nov @ 12:04pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 24 Nov @ 12:04pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 24 Nov @ 12:04pm

Payback

Kill a Hunter with its own flechettes.
Unlocked 24 Nov @ 12:04pm

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 24 Nov @ 12:04pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 24 Nov @ 12:04pm

Grave Robber

Steal a Zombine's grenade.
Unlocked 24 Nov @ 12:04pm

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 24 Nov @ 12:04pm



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.

Pacifist

Contain the Citadel core without killing any stalkers.

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.

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.

Hot Potat0wned

Kill a Combine soldier with his own grenade.