| Achievement | Unlocked | Visibility | Global Unlocks | |
|---|---|---|---|---|
|
Zombie-que
Use flares to light 15 zombies on fire. |
2010-06-13 21:54:39 | 8.2% | ||
|
The One Free Bullet
Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay! |
2010-06-13 08:46:44 | 8.7% | ||
|
Escape From City 17
Escape City 17 with Alyx. |
2010-06-13 08:46:44 | 48.1% | ||
|
Pacifist
Contain the Citadel core without killing any stalkers. |
2010-06-11 05:58:54 | 10.2% | ||
|
Containment
Contain the Citadel core. |
2010-06-11 05:58:54 | 59.9% | ||
|
Conservationist
Kill five enemies with the same energy ball. |
Unlocked | 9.7% | ||
|
Car Crusher
Use the cars to squash 15 antlions in Episode One. |
Unlocked | 15.4% | ||
|
Think Fast!
Kill an Elite Soldier with his own energy ball. |
Unlocked | 26.1% | ||
|
Citizen Escort
Don't let any citizens die when escorting them to the escape train. |
Unlocked | 31.8% | ||
|
Live Bait
Help Alyx snipe 30 enemies in Episode One. |
Unlocked | 28.4% | ||
|
Attica!
Destroy the gunship in the hospital attic. |
Unlocked | 50.9% | ||
|
Elevator Action
Survive long enough to get on the parking garage elevator. |
Unlocked | 53.7% | ||
|
Watch Your Head!
Make it to the bottom of the Citadel's main elevator shaft in one piece. |
Unlocked | 62.2% |