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There are 19 achievements for the Xbox 360, six of which are secret, worth 210 Gamerscore points. There are also six achievements that can be obtained here or the other Half-Life games in The Orange Box. There are 22 achievements for Steam.

General[edit]

Picture Name DescriptionGamerscore icon.
HL2E2 achievement acid reflex.png Acid Reflex Kill an acid antlion worker. Gamerscore points
HL2E2 achievement get some grub.png Get Some Grub Squish every antlion grub in Episode Two.
Note: Loss of internet connection may interfere with this achievement.
20 Gamerscore points
HL2E2 achievement pinata party.png Piñata Party Find and break every web cache in Episode Two. Gamerscore points
HL2E2 achievement into the breach.png Into the Breach Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft. Gamerscore points
HL2E2 achievement hit and run.png Hit and Run Run over 20 enemies with the car in Episode Two. Gamerscore points
HL2E2 achievement puttin on a clinic.png Puttin' on a Clinic Defeat the chopper in Episode Two without any misses. 15 Gamerscore points
HL2E2 achievement cache checker.png Cache Checker Find every radar cache in chapter Under the Radar. 10 Gamerscore points
HL2E2 achievement gordon propelled rocket.png Gordon Propelled Rocket Unlock the rocket launcher lambda cache in chapter Under the Radar. Gamerscore points
HL2E2 achievement pedal to the metal.png Pedal to the Metal Beat DOG in a race to the White Forest base. Gamerscore points
HL2E2 achievement little rocket man.png Little Rocket Man Send the garden gnome into space. 30 Gamerscore points
HL2E2 achievement neighborhood watch.png Neighborhood Watch Save all buildings outside the missile silo from destruction. 35 Gamerscore points
HL2E2 achievement payback.png Payback Kill a Hunter with its own flechettes. 10 Gamerscore points
HL2E2 achievement grave robber.png Grave Robber Steal a Zombine's grenade. Gamerscore points

Secret[edit]

Picture Name DescriptionGamerscore icon.
HL2E2 achievement twofer.png Twofer Defeat both antlion guards outside the White Forest. Gamerscore points
HL2E2 achievement meet the hunters.png Meet the Hunters Survive the Hunter ambush with Alyx. 10 Gamerscore points
HL2E2 achievement gunishment.png Gunishment! Destroy the Combine cannon in the junkyard. Gamerscore points
HL2E2 achievement quiet mountain getaway.png Quiet Mountain Getaway Survive the ambush at White Forest Inn. 10 Gamerscore points
HL2E2 achievement secondary silo secured.png Secondary Silo Secured Secure the launch doors on missile silo 2. Gamerscore points
HL2E2 achievement defense of the armament.png Defense of the Armament Save the missile silo from the Combine offensive. 20 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. For Steam, only Bone Breaker, Deadly Harvest and Hot Potat0wned can be obtained in Episode Two.

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