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27 of 33 (82%) achievements earned:

Personal Achievements
 
Unlocked Jul 20, 2011 @ 9:19am

Defiant

Hit the trashcan cop with the can.
Unlocked Jul 20, 2011 @ 9:37am

Malcontent

Escape the apartment block raid.
Unlocked Sep 24, 2011 @ 5:38pm

What cat?

Break the mini-teleporter in Kleiner's lab.
Unlocked Jul 20, 2011 @ 9:54am

Trusty Hardware

Get the crowbar.
Unlocked Jul 21, 2011 @ 10:15am

Barnacle Bowling

Kill five barnacles with one barrel.
Unlocked Jul 21, 2011 @ 11:31am

Anchor's Aweigh!

Get the airboat.
Unlocked Jul 21, 2011 @ 3:09pm

Heavy Weapons

Get the airboat's mounted gun.
Unlocked Jul 21, 2011 @ 8:07pm

Vorticough

Discover the hidden singing vortigaunt cave in chapter Water Hazard.
Unlocked Jul 21, 2011 @ 7:54pm

Revenge!

Destroy the hunter-chopper in Half-Life 2.
Unlocked Jul 23, 2011 @ 11:09am

Blast from the Past

Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked Jul 23, 2011 @ 11:09am

Zero-Point Energy

Get the Gravity Gun in Black Mesa East.
Unlocked Jul 24, 2011 @ 12:59pm

Hallowed Ground

Escort Gregori safely through the church cemetery.
Unlocked Jul 28, 2011 @ 5:57pm

OSHA Violation

Kill 3 enemies using the crane.
Unlocked Jul 28, 2011 @ 6:28pm

Targetted Advertising

Pin a soldier to the billboard in chapter Highway 17.
Unlocked Jul 28, 2011 @ 5:36pm

Where Cubbage Fears to Tread

Defend Little Odessa from the gunship attack.
Unlocked Jul 29, 2011 @ 6:41pm

One Man Army

Destroy six gunships in Half-Life 2.
Unlocked Jul 29, 2011 @ 6:38pm

Bug Hunt

Use the antlions to kill 50 enemies.
Unlocked Sep 24, 2011 @ 4:24pm

Warden Freeman

Survive the second turret standoff in Nova Prospekt.
Unlocked Sep 24, 2011 @ 5:55pm

Follow Freeman

Gain command of a squad of rebels in the uprising.
Unlocked Sep 24, 2011 @ 7:07pm

Radiation Levels Detected

Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked Sep 25, 2011 @ 1:16pm

Plaza Defender

Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked Sep 25, 2011 @ 2:22pm

Counter-Sniper

Kill all of the snipers in City 17.
Unlocked Sep 26, 2011 @ 4:14pm

Fight the Power

Shut down the supression device by disabling its generators.
Unlocked Sep 26, 2011 @ 7:32pm

Giant Killer

Survive the rooftop strider battle in the ruins of City 17.
Unlocked Sep 28, 2011 @ 8:49pm

Atomizer

Disintegrate 15 soldiers by throwing them into a Combine ball field.
Unlocked Sep 28, 2011 @ 8:55pm

Singularity Collapse

Destroy the Citadel's reactor core.
Unlocked Sep 28, 2011 @ 8:20pm

Hack Attack!

Kill five enemies with a Manhack.



Two Points

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

Zombie Chopper

Play through Ravenholm using only the Gravity Gun.

Keep Off the Sand!

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

Flushed

Kill an enemy with a toilet.

Lambda Locator

Find all lambda caches in Half-Life 2.
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