22 Achievements
Acid Reflex Kill an acid antlion worker.
289 achievers
Bone Breaker Kill 30 enemies with thrown physics objects.
95 achievers
Cache Checker Find every radar cache in chapter Under The Radar.
169 achievers
Deadly Harvest Kill an enemy by planting a hopper mine.
219 achievers
Defense of the Armament Save the missile silo from the Combine offensive.
184 achievers
Get Some Grub Squish every antlion grub in Episode Two.
30 achievers
Gordon Propelled Rocket Unlock the rocket launcher lambda cache in chapter Under The Radar.
197 achievers
Grave Robber Steal a Zombine's grenade.
155 achievers
Gunishment! Destroy the Combine Autogun in the junkyard.
216 achievers
Hit and Run Run over 20 enemies with the car in Episode Two.
128 achievers
Hot Potat0wned Kill a Combine soldier with his own grenade.
40 achievers
Into the Breach Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.
258 achievers
Little Rocket Man Send the garden gnome into space.
39 achievers
Meet the Hunters Survive the Hunter ambush with Alyx.
223 achievers
Neighborhood Watch Save all buildings outside the missile silo from destruction.
31 achievers
Payback Kill a Hunter with its own flechettes.
79 achievers
Pedal to the Metal Beat DOG in a race to the White Forest base.
143 achievers
Piñata Party Find and break every web cache in Episode Two.
56 achievers
Puttin' On a Clinic Defeat the chopper in Episode Two without any misses.
46 achievers
Quiet Mountain Getaway Survive the ambush at White Forest Inn.
214 achievers
Secondary Silo Secured Secure the launch doors on missile silo 2.
210 achievers
Twofer Defeat both antlion guards outside the White Forest.
223 achievers
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