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There are 32 achievements for the Xbox 360, five of which are secret, worth a total of 275 Gamerscore points. There are also six achievements that can be obtained here or the other Half-Life games in The Orange Box. There are 33 achievements for Steam.

General[edit]

Picture Name DescriptionGamerscore icon.
HL2 achievement malcontent.png Malcontent Escape the apartment block raid. Gamerscore points
HL2 achievement what cat.png What cat? Break the mini-teleporter in Kleiner's lab. Gamerscore points
HL2 achievement trusty hardware.png Trusty Hardware Get the crowbar. Gamerscore points
HL2 achievement barnacle bowling.png Barnacle Bowling Kill five barnacles with one barrel. Gamerscore points
HL2 achievement anchors aweigh.png Anchor's Aweigh! Get the airboat. Gamerscore points
HL2 achievement heavy weapons.png Heavy Weapons Get the airboat's mounted gun. Gamerscore points
HL2 achievement vorticough.png Vorticough Discover the hidden singing vortigaunt cave in chapter Water Hazard. 13 Gamerscore points
HL2 achievement revenge.png Revenge! Destroy the hunter-chopper in Half-Life 2. 10 Gamerscore points
HL2 achievement blast from the past.png Blast from the Past Find the HEV Suit Charger faceplate in Eli's scrapyard. 10 Gamerscore points
HL2 achievement zero-point energy.png Zero-Point Energy Get the gravity gun in Black Mesa East. Gamerscore points
HL2 achievement two points.png Two Points Use DOG's ball to make a basket in Eli's scrapyard. Gamerscore points
HL2 achievement zero-point energy.png Zombie Chopper Play through Ravenholm using only the gravity gun. 25 Gamerscore points
HL2 achievement osha violation.png OSHA Violation Kill 3 enemies using the crane. Gamerscore points
HL2 achievement targetted advertising.png Targeted Advertising Pin a soldier to the billboard in chapter Highway 17. Gamerscore points
HL2 achievement one man army.png One Man Army Destroy six gunships in Half-Life 2. Gamerscore points
HL2 achievement keep off the sand.png Keep Off the Sand! Cross the antlion beach in chapter Sandtraps without touching the sand. 20 Gamerscore points
HL2 achievement bug hunt.png Bug Hunt Use the antlions to kill 50 enemies. 10 Gamerscore points
HL2 achievement flushed.png Flushed Kill an enemy with a toilet. Gamerscore points
HL2 achievement warden freeman.png Warden Freeman Survive the second turret standoff in Nova Prospekt. 10 Gamerscore points
HL2 achievement radiation levels detected.png "Radiation Levels Detected" Get through the toxic tunnel under City 17 in Half-Life 2. Gamerscore points
HL2 achievement plaza defender.png Plaza Defender Survive the generator plaza standoff in chapter Anticitizen One. 10 Gamerscore points
HL2 achievement counter-sniper.png Counter-Sniper Kill all of the snipers in City 17. Gamerscore points
HL2 achievement fight the power.png Fight the Power Shut down the supression device by disabling its generators. 10 Gamerscore points
HL2 achievement giant killer.png Giant Killer Survive the rooftop strider battle in the ruins of City 17. 10 Gamerscore points
HL2 achievement lambda locator.png Lambda Locator Find all lambda caches in Half-Life 2. 15 Gamerscore points
HL2 achievement atomizer.png Atomizer Disintegrate 15 soldiers by throwing them into a Combine ball field. 10 Gamerscore points
HL2 achievement follow freeman.png Follow Freeman Gain command of a squad of rebels in the uprising. 10 Gamerscore points

Secret[edit]

Picture Name DescriptionGamerscore icon.
HL2 achievement singularity collapse.png Singularity Collapse Destroy the Citadel's reactor core. 25 Gamerscore points
HL2 achievement defiant.png Defiant Hit the trashcan cop with the can. Gamerscore points
HL2 achievement hallowed ground.png Hallowed Ground Escort Gregori safely through the church cemetery. Gamerscore points
HL2 achievement where cubbage fears to tread.png Where Cubbage Fears to Tread Defend Little Odessa from the gunship attack. Gamerscore points
HL2 achievement submissive.png Submissive Put the can in the trash. Gamerscore points

Any Half-Life 2 game[edit]

These six achievements can be performed on Half-Life 2, Episode One or Episode Two and are worth 40 Gamerscore points on the Orange Box. On Steam, only Hack Attack! can be obtained in Half-Life 2.

Picture Name DescriptionGamerscore icon.
HL2E2 achievement bone breaker.png Bone Breaker Kill 30 enemies with thrown physics objects. Gamerscore points
HL2E2 achievement deadly harvest.png Deadly Harvest Kill an enemy by planting a hopper mine. Gamerscore points
HL2 achievement defiant.png Hot Potat0wned Kill a Combine soldier with his own grenade. 10 Gamerscore points
HL2 achievement hack attack.png Hack Attack! Kill five enemies with a Manhack. Gamerscore points
HL2 achievement conservationist.png Conservationist Kill five enemies with the same energy ball. Gamerscore points
HL2 achievement conservationist.png Think Fast! Kill an Elite Soldier with his own energy ball. 10 Gamerscore points