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11 of 22 (50%) achievements earned:

Personal Achievements

Acid Reflex

Kill an acid antlion worker.

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.


Defeat both antlion guards outside the White Forest.

Meet the Hunters

Survive the Hunter ambush with Alyx.


Destroy the Combine Autogun in the junkyard.

Cache Checker

Find every radar cache in chapter Under The Radar.

Gordon Propelled Rocket

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

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.

Secondary Silo Secured

Secure the launch doors on missile silo 2.

Defense of the Armament

Save the missile silo from the Combine offensive.

Deadly Harvest

Kill an enemy by planting a hopper mine.

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.

Pedal to the Metal

Beat DOG in a race to the White Forest base.

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.

Grave Robber

Steal a Zombine's grenade.