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22 of 33 (67%) achievements earned:

Personal Achievements
 
Unlocked Mar 25, 2016 @ 10:12am

Defiant

Hit the trashcan cop with the can.
Unlocked Sep 5, 2013 @ 5:32pm

Submissive

Put the can in the trash.
Unlocked Sep 5, 2013 @ 5:40pm

Malcontent

Escape the apartment block raid.
Unlocked Sep 5, 2013 @ 5:53pm

Trusty Hardware

Get the crowbar.
Unlocked Sep 6, 2013 @ 2:25pm

Anchor's Aweigh!

Get the airboat.
Unlocked Sep 6, 2013 @ 3:11pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked Sep 6, 2013 @ 3:31pm

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked Sep 6, 2013 @ 3:26pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked Sep 6, 2013 @ 3:53pm

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked Sep 6, 2013 @ 4:50pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked Sep 8, 2013 @ 6:31pm

OSHA Violation

Kill 3 enemies using the crane.
Unlocked Sep 8, 2013 @ 6:21pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked Sep 18, 2013 @ 3:21pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked Sep 18, 2013 @ 3:36pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked Sep 18, 2013 @ 6:13pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked Sep 18, 2013 @ 6:23pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked Sep 19, 2013 @ 4:48pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked Sep 19, 2013 @ 5:07pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked Sep 20, 2013 @ 4:40pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked Sep 20, 2013 @ 5:16pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked Sep 21, 2013 @ 5:07pm

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked Sep 21, 2013 @ 5:31pm

Singularity Collapse

Destroy the Citadel's reactor core.



What cat?

Break the mini-teleporter in Kleiner's lab.

Barnacle Bowling

Kill five barnacles with one barrel.

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.

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.

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.

Lambda Locator

Find all lambda caches in Half-Life 2.

Hack Attack!

Kill five enemies with a Manhack.