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36 of 69 (52%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 28 Nov @ 12:52pm

Submissive

Put the can in the trash.
Unlocked 16 Jan, 2016 @ 2:43pm

Malcontent

Escape the apartment block raid.
Unlocked 16 Jan, 2016 @ 2:50pm

Trusty Hardware

Get the crowbar.
Unlocked 16 Jan, 2016 @ 3:28pm

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked 1 Dec @ 7:43pm

Anchor's Aweigh!

Get the airboat.
Unlocked 18 May, 2020 @ 6:20pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 1 Dec @ 8:45pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 17 Jan, 2016 @ 9:31am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 30 Jan, 2022 @ 4:42pm

OSHA Violation

Kill 3 enemies using the crane.
Unlocked 17 Jan, 2016 @ 4:04pm

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 31 Jan, 2022 @ 4:33pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 30 Jan, 2022 @ 5:09pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 5 Dec @ 8:43pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 1 Feb, 2022 @ 3:46pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 1 Feb, 2022 @ 4:09pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 2 Feb, 2022 @ 8:47am

Fight the Power

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

Hack Attack!

Kill five enemies with a Manhack.
Unlocked 5 Dec @ 8:41pm

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 17 Dec @ 6:26pm

Containment

Contain the Citadel core.
Unlocked 17 Dec @ 6:39pm

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 17 Dec @ 7:16pm

Attica!

Destroy the gunship in the hospital attic.
Unlocked 19 Dec @ 6:07pm

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 19 Dec @ 6:42pm

Escape From City 17

Escape City 17 with Alyx.
Unlocked 19 Dec @ 6:53pm

Acid Reflex

Kill an acid antlion worker.
Unlocked 19 Dec @ 7:14pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 24 Dec @ 2:45pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 24 Dec @ 3:29pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 24 Dec @ 3:58pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 24 Dec @ 6:00pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 24 Dec @ 6:06pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 24 Dec @ 6:17pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 24 Dec @ 6:46pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 24 Dec @ 7:20pm

Payback

Kill a Hunter with its own flechettes.
Unlocked 24 Dec @ 6:38pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 24 Dec @ 2:34pm

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 19 Dec @ 6:56pm



What cat?

Break the mini-teleporter in Kleiner's lab.

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.

Revenge!

Destroy the hunter-chopper in Half-Life 2.

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.

Two Points

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

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

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.

Counter-Sniper

Kill all of the snipers in City 17.

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.

Lambda Locator

Find all lambda caches in Half-Life 2.

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.

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.

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.

Cache Checker

Find every radar cache in chapter Under The Radar.

Pedal to the Metal

Beat DOG in a race to the White Forest base.

Little Rocket Man

Send the garden gnome into space.

Neighborhood Watch

Save all buildings outside the missile silo from destruction.

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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