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20 of 23 (87%) achievements earned:
Personal Achievements
 

Acid Reflex

Kill an acid antlion worker.
Unlocked 8 Apr, 2018 @ 7:58pm

Piñata Party

Find and break every web cache in Episode Two.
Unlocked 10 Apr, 2018 @ 12:15am

Into the Breach

Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
Unlocked 8 Apr, 2018 @ 8:22pm

Twofer

Defeat both antlion guards outside the White Forest.
Unlocked 8 Apr, 2018 @ 9:18pm

Hit and Run

Run over 20 enemies with the car in Episode Two.
Unlocked 10 Apr, 2018 @ 12:53am

Meet the Hunters

Survive the Hunter ambush with Alyx.
Unlocked 8 Apr, 2018 @ 10:07pm

Puttin' On a Clinic

Defeat the chopper in Episode Two without any misses.
Unlocked 10 Apr, 2018 @ 12:37am

Gunishment!

Destroy the Combine Autogun in the junkyard.
Unlocked 8 Apr, 2018 @ 10:50pm

Cache Checker

Find every radar cache in chapter Under The Radar.
Unlocked 8 Apr, 2018 @ 11:46pm

Pedal to the Metal

Beat DOG in a race to the White Forest base.
Unlocked 8 Apr, 2018 @ 11:52pm

Gordon Propelled Rocket

Unlock the rocket launcher lambda cache in chapter Under The Radar.
Unlocked 8 Apr, 2018 @ 10:58pm

Quiet Mountain Getaway

Survive the ambush at White Forest Inn.
Unlocked 8 Apr, 2018 @ 11:22pm

Little Rocket Man

Send the garden gnome into space.
Unlocked 9 Apr, 2018 @ 12:01am

Secondary Silo Secured

Secure the launch doors on missile silo 2.
Unlocked 9 Apr, 2018 @ 12:19am

Defense of the Armament

Save the missile silo from the Combine offensive.
Unlocked 9 Apr, 2018 @ 12:57am

Payback

Kill a Hunter with its own flechettes.
Unlocked 10 Apr, 2018 @ 12:24am

Bone Breaker

Kill 30 enemies with thrown physics objects.
Unlocked 9 Apr, 2018 @ 11:52pm

Deadly Harvest

Kill an enemy by planting a hopper mine.
Unlocked 8 Apr, 2018 @ 8:12pm

Hot Potat0wned

Kill a Combine soldier with his own grenade.
Unlocked 10 Apr, 2018 @ 12:50am

Grave Robber

Steal a Zombine's grenade.
Unlocked 8 Apr, 2018 @ 8:32pm



Get Some Grub

Squish every antlion grub in Episode Two.

Neighborhood Watch

Save all buildings outside the missile silo from destruction.

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.