Unlocked: Jan 14, 2012 7:20pm
Submissive
Put the can in the trash.
Unlocked: Jan 14, 2012 7:23pm
Malcontent
Escape the apartment block raid.
Unlocked: Jan 14, 2012 7:34pm
Trusty Hardware
Get the crowbar.
Unlocked: Jan 15, 2012 4:27pm
Barnacle Bowling
Kill five barnacles with one barrel.
Unlocked: Jan 16, 2012 9:54am
Anchor's Aweigh!
Get the airboat.
Unlocked: Jan 16, 2012 12:17pm
Heavy Weapons
Get the airboat's mounted gun.
Unlocked: Jan 16, 2012 12:29pm
Revenge!
Destroy the hunter-chopper in Half-Life 2.
Unlocked: Jan 16, 2012 12:43pm
Blast from the Past
Find the HEV Suit Charger faceplate in Eli's scrapyard.
Unlocked: Jan 16, 2012 12:44pm
Zero-Point Energy
Get the Gravity Gun in Black Mesa East.
Unlocked: May 18, 2013 5:46pm
Hallowed Ground
Escort Gregori safely through the church cemetery.
Unlocked: May 20, 2013 11:40am
OSHA Violation
Kill 3 enemies using the crane.
Unlocked: May 20, 2013 11:54am
Targetted Advertising
Pin a soldier to the billboard in chapter Highway 17.
Unlocked: May 20, 2013 11:33am
Where Cubbage Fears to Tread
Defend Little Odessa from the gunship attack.
Unlocked: May 21, 2013 1:22pm
One Man Army
Destroy six gunships in Half-Life 2.
Unlocked: Jan 11, 2012 4:04pm
Warden Freeman
Survive the second turret standoff in Nova Prospekt.
Unlocked: Jan 11, 2012 4:24pm
Follow Freeman
Gain command of a squad of rebels in the uprising.
Unlocked: Jan 12, 2012 4:15pm
Radiation Levels Detected
Get through the toxic tunnel under City 17 in Half-Life 2.
Unlocked: Jan 17, 2012 1:18pm
Plaza Defender
Survive the generator plaza standoff in chapter Anticitizen One.
Unlocked: Jan 18, 2012 1:29pm
Fight the Power
Shut down the supression device by disabling its generators.
Unlocked: Jan 25, 2012 1:12pm
Giant Killer
Survive the rooftop strider battle in the ruins of City 17.
Unlocked: Feb 7, 2012 3:24pm
Singularity Collapse
Destroy the Citadel's reactor core.
What cat?
Break the mini-teleporter in Kleiner's lab.
Vorticough
Discover the hidden singing vortigaunt cave in chapter Water Hazard.
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.
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.
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.
