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10 of 22 (45%) achievements earned:

Personal Achievements
Unlocked Jun 20, 2012 @ 11:04am

Acid Reflex

Kill an acid antlion worker.
Unlocked Jun 20, 2012 @ 11:27am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked Jun 20, 2012 @ 12:20pm


Defeat both antlion guards outside the White Forest.
Unlocked Jun 20, 2012 @ 4:10pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked Jun 20, 2012 @ 4:55pm


Destroy the Combine Autogun in the junkyard.
Unlocked Jun 20, 2012 @ 5:13pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked Jun 20, 2012 @ 5:39pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked Jun 20, 2012 @ 6:21pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked Jun 20, 2012 @ 11:18am

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked Jun 20, 2012 @ 12:44pm

Grave Robber

Steal a Zombine's grenade.

Get Some Grub

Squish every antlion grub in Episode Two.

Piñata Party

Find and break every web cache in Episode Two.

Hit and Run

Run over 20 enemies with the car in Episode Two.

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.

Cache Checker

Find every radar cache in chapter Under The Radar.

Pedal to the Metal

Beat DOG in a race to the White Forest base.

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.

Little Rocket Man

Send the garden gnome into space.

Neighborhood Watch

Save all buildings outside the missile silo from destruction.


Kill a Hunter with its own flechettes.

Bone Breaker

Kill 30 enemies with thrown physics objects.

Hot Potat0wned

Kill a Combine soldier with his own grenade.