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