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15 of 23 (65%) achievements earned:
Personal Achievements
 

Acid Reflex

Kill an acid antlion worker.
Unlocked 23 Nov, 2017 @ 1:44pm

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 24 Nov, 2017 @ 12:31pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 24 Nov, 2017 @ 2:02pm

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 24 Nov, 2017 @ 2:46pm

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 24 Nov, 2017 @ 3:43pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 24 Nov, 2017 @ 4:27pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 24 Nov, 2017 @ 4:33pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 24 Nov, 2017 @ 3:59pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 24 Nov, 2017 @ 4:20pm

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 24 Nov, 2017 @ 4:55pm

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 24 Nov, 2017 @ 5:45pm

Payback

Kill a Hunter with its own flechettes.
Unlocked 24 Nov, 2017 @ 4:19pm

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 24 Nov, 2017 @ 3:27pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 24 Nov, 2017 @ 12:20pm

Grave Robber

Steal a Zombine's grenade.
Unlocked 24 Nov, 2017 @ 12:41pm



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.

Hot Potat0wned

Kill a Combine soldier with his own grenade.

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.