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13 dari 23 (57%) pencapaian didapatkan:
Pencapaian Pribadi
 

Acid Reflex

Kill an acid antlion worker.
Didapatkan pada 3 Jan 2014 @ 9:31pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Didapatkan pada 3 Jan 2014 @ 10:14pm

Twofer

Defeat both antlion guards outside the White Forest.
Didapatkan pada 3 Jan 2014 @ 11:33pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Didapatkan pada 4 Jan 2014 @ 12:17am

Gunishment!

Destroy the Combine Autogun in the junkyard.
Didapatkan pada 6 Jan 2014 @ 7:18pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Didapatkan pada 6 Jan 2014 @ 7:57pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Didapatkan pada 6 Jan 2014 @ 8:03pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Didapatkan pada 6 Jan 2014 @ 7:28pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Didapatkan pada 6 Jan 2014 @ 7:48pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Didapatkan pada 7 Jan 2014 @ 9:37pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Didapatkan pada 4 Apr 2020 @ 9:32pm

Grave Robber

Steal a Zombine's grenade.
Didapatkan pada 3 Jan 2014 @ 11:43pm

Gnome Alone

If you are reading this achievement, Gabe Newell has successfully launched Gnome Chompski into space. If you did not also receive the achievement 'Manufacturing Ascent', Newell has abandoned his plans to shoot Noam Chomsky into space.
Didapatkan pada 15 Nov @ 2:48pm



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.

Little Rocket Man

Send the garden gnome into space.

Neighborhood Watch

Save all buildings outside the missile silo from destruction.

Defense of the Armament

Save the missile silo from the Combine offensive.

Payback

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.