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48 of 69 (70%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 26 Dec, 2018 @ 3:06pm

Submissive

Put the can in the trash.
Unlocked 22 Jul, 2020 @ 9:39am

Malcontent

Escape the apartment block raid.
Unlocked 17 Jan, 2019 @ 12:58pm

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked 5 Apr, 2020 @ 1:38pm

Trusty Hardware

Get the crowbar.
Unlocked 17 Jan, 2019 @ 1:09pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 11 Apr, 2020 @ 3:39pm

Anchor's Aweigh!

Get the airboat.
Unlocked 20 Jan, 2019 @ 9:51pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 21 Jan, 2019 @ 11:28am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 21 Jan, 2019 @ 11:41am

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked 17 Nov, 2024 @ 8:23pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 21 Jan, 2019 @ 11:55am

Two Points

Use DOG's ball to make a basket in Eli's scrapyard.
Unlocked 21 Jan, 2019 @ 12:00pm

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.
Unlocked 17 Nov, 2024 @ 9:13pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 21 Jan, 2019 @ 3:05pm

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 22 Jan, 2019 @ 6:30pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 21 Jan, 2019 @ 8:39pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 7 Feb, 2019 @ 8:06pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 22 Jan, 2019 @ 8:12pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 22 Jan, 2019 @ 8:58pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 22 Jan, 2019 @ 9:15pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 22 Jan, 2019 @ 9:47pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 3 Feb, 2019 @ 7:47pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 7 Feb, 2019 @ 7:59pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 10 Mar, 2020 @ 6:30pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 10 Mar, 2020 @ 7:11pm

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 17 Nov, 2024 @ 10:09pm

Containment

Contain the Citadel core.
Unlocked 17 Nov, 2024 @ 10:09pm

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 24 Nov, 2024 @ 11:19am

Live Bait

Help Alyx snipe 30 enemies in Episode One.
Unlocked 24 Nov, 2024 @ 4:55pm

Attica!

Destroy the gunship in the hospital attic.
Unlocked 24 Nov, 2024 @ 5:23pm

Escape From City 17

Escape City 17 with Alyx.
Unlocked 24 Nov, 2024 @ 6:06pm

The One Free Bullet

Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!
Unlocked 24 Nov, 2024 @ 6:06pm

Think Fast!

Kill an Elite Soldier with his own energy ball.
Unlocked 17 Nov, 2024 @ 10:09pm

Acid Reflex

Kill an acid antlion worker.
Unlocked 17 Nov, 2024 @ 10:08pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 17 Nov, 2024 @ 10:08pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 17 Nov, 2024 @ 10:08pm

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 25 Nov, 2024 @ 2:03pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 17 Nov, 2024 @ 10:08pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 17 Nov, 2024 @ 10:08pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 24 Nov, 2024 @ 10:57pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 24 Nov, 2024 @ 11:02pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 24 Nov, 2024 @ 10:39pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 17 Nov, 2024 @ 10:08pm

Little Rocket Man

Send the garden gnome into space.
Unlocked 17 Nov, 2024 @ 10:08pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 17 Nov, 2024 @ 10:08pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 17 Nov, 2024 @ 10:08pm

Grave Robber

Steal a Zombine's grenade.
Unlocked 17 Nov, 2024 @ 10:08pm

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, 2024 @ 1:58pm



Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.

OSHA Violation

Kill 3 enemies using the crane.

Keep Off the Sand!

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

Flushed

Kill an enemy with a toilet.

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.

Citizen Escort

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

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.

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.

Deadly Harvest

Kill an enemy by planting a hopper mine.

Hot Potat0wned

Kill a Combine soldier with his own grenade.