| Game |
Achievement |
Points |
Unlocked |
 |
 |
Get Some Grub |
1.21 | |
| Squish every antlion grub in Episode Two. |
|
 |
Neighborhood Watch |
1.16 | |
| Save all buildings outside the missile silo from destruction. |
|
 |
Little Rocket Man |
1.12 | |
| Send the garden gnome into space. |
|
 |
Hot Potat0wned |
1.07 | |
| Kill a Combine soldier with his own grenade. |
|
 |
Puttin' On a Clinic |
1.04 | |
| Defeat the chopper in Episode Two without any misses. |
|
 |
Piñata Party |
1.00 | |
| Find and break every web cache in Episode Two. |
|
 |
Payback |
0.90 | |
| Kill a Hunter with its own flechettes. |
|
 |
Bone Breaker |
0.83 | |
| Kill 30 enemies with thrown physics objects. |
|
 |
Hit and Run |
0.72 | |
| Run over 20 enemies with the car in Episode Two. |
|
 |
Pedal to the Metal |
0.68 | |
| Beat DOG in a race to the White Forest base. |
|
 |
Grave Robber |
0.67 | |
| Steal a Zombine's grenade. |
|
 |
Cache Checker |
0.64 | |
| Find every radar cache in chapter Under The Radar. |
|
 |
Defense of the Armament |
0.57 | |
| Save the missile silo from the Combine offensive. |
|
 |
Gordon Propelled Rocket |
0.57 | |
| Unlock the rocket launcher lambda cache in chapter Under The Radar. |
|
 |
Secondary Silo Secured |
0.53 | |
| Secure the launch doors on missile silo 2. |
|
 |
Deadly Harvest |
0.53 | |
| Kill an enemy by planting a hopper mine. |
|
 |
Quiet Mountain Getaway |
0.53 | |
| Survive the ambush at White Forest Inn. |
|
 |
Gunishment! |
0.52 | |
| Destroy the Combine Autogun in the junkyard. |
|
 |
Meet the Hunters |
0.51 | |
| Survive the Hunter ambush with Alyx. |
|
 |
Twofer |
0.50 | |
| Defeat both antlion guards outside the White Forest. |
|
 |
Into the Breach |
0.47 | |
| Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft. |
|
 |
Acid Reflex |
0.44 | |
| Kill an acid antlion worker. |
