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Đạt được 15 trên 23 (65%) thành tựu:
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Acid Reflex

Kill an acid antlion worker.
Mở khóa vào 5 Thg01, 2015 @ 5:56pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Mở khóa vào 5 Thg01, 2015 @ 6:23pm

Twofer

Defeat both antlion guards outside the White Forest.
Mở khóa vào 5 Thg01, 2015 @ 7:44pm

Hit and Run

Run over 20 enemies with the car in Episode Two.
Mở khóa vào 7 Thg01, 2015 @ 4:03pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Mở khóa vào 7 Thg01, 2015 @ 11:14am

Cache Checker

Find every radar cache in chapter Under The Radar.
Mở khóa vào 7 Thg01, 2015 @ 11:33am

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Mở khóa vào 7 Thg01, 2015 @ 11:38am

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Mở khóa vào 7 Thg01, 2015 @ 11:17am

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Mở khóa vào 7 Thg01, 2015 @ 11:29am

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Mở khóa vào 7 Thg01, 2015 @ 3:14pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Mở khóa vào 7 Thg01, 2015 @ 4:33pm

Bone Breaker

Kill 30 enemies with thrown physics objects.
Mở khóa vào 5 Thg01, 2015 @ 8:06pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Mở khóa vào 5 Thg01, 2015 @ 6:10pm

Grave Robber

Steal a Zombine's grenade.
Mở khóa vào 5 Thg01, 2015 @ 8:06pm

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.
Mở khóa vào 24 Thg12 @ 8:23pm



Get Some Grub

Squish every antlion grub in Episode Two.

Piñata Party

Find and break every web cache in Episode Two.

Meet the Hunters

Survive the Hunter ambush with Alyx.

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.

Payback

Kill a Hunter with its own flechettes.

Hot Potat0wned

Kill a Combine soldier with his own grenade.