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42 of 69 (61%) achievements earned:
Personal Achievements
 

Defiant

Hit the trashcan cop with the can.
Unlocked 21 Jan, 2018 @ 8:35am

Malcontent

Escape the apartment block raid.
Unlocked 7 Feb, 2018 @ 11:31am

Trusty Hardware

Get the crowbar.
Unlocked 9 Feb, 2018 @ 3:01pm

Anchor's Aweigh!

Get the airboat.
Unlocked 10 Feb, 2018 @ 7:36am

Heavy Weapons

Get the airboat's mounted gun.
Unlocked 10 Feb, 2018 @ 8:08am

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked 10 Feb, 2018 @ 8:18am

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked 10 Feb, 2018 @ 11:30am

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked 10 Feb, 2018 @ 12:13pm

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked 11 Feb, 2018 @ 1:33pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked 10 Feb, 2018 @ 2:41pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked 14 Feb, 2018 @ 1:16pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked 13 Feb, 2018 @ 7:23am

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked 13 Feb, 2018 @ 9:19am

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked 13 Feb, 2018 @ 9:36am

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked 13 Feb, 2018 @ 1:25pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked 13 Feb, 2018 @ 1:42pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked 14 Feb, 2018 @ 12:20pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked 14 Feb, 2018 @ 1:44pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked 14 Feb, 2018 @ 2:31pm

Watch Your Head!

Make it to the bottom of the Citadel's main elevator shaft in one piece.
Unlocked 16 Nov @ 10:56am

Containment

Contain the Citadel core.
Unlocked 16 Nov @ 1:27pm

Elevator Action

Survive long enough to get on the parking garage elevator.
Unlocked 16 Nov @ 1:57pm

Attica!

Destroy the gunship in the hospital attic.
Unlocked 17 Nov @ 10:46am

Citizen Escort

Don't let any citizens die when escorting them to the escape train.
Unlocked 18 Nov @ 7:28am

Escape From City 17

Escape City 17 with Alyx.
Unlocked 18 Nov @ 7:42am

Conservationist

Kill five enemies with the same energy ball.
Unlocked 17 Nov @ 12:55pm

Acid Reflex

Kill an acid antlion worker.
Unlocked 18 Nov @ 5:10am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 18 Nov @ 5:10am

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 18 Nov @ 5:10am

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 18 Nov @ 5:10am

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 18 Nov @ 5:10am

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.
Unlocked 18 Nov @ 5:10am

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 18 Nov @ 5:10am

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 18 Nov @ 5:10am

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 18 Nov @ 5:10am

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 18 Nov @ 5:10am

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 18 Nov @ 5:10am

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 18 Nov @ 5:10am

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 18 Nov @ 5:10am

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 18 Nov @ 5:10am

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 18 Nov @ 5:10am

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 @ 2:38pm



What cat?

Break the mini-teleporter in Kleiner's lab.

Barnacle Bowling

Kill five barnacles with one barrel.

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.

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.

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.

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!

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.

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.

Grave Robber

Steal a Zombine's grenade.
+1

1 hidden achievement remaining

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