Every achievement in Half-Life 2: Episode One, ranked by how many Steam players have unlocked it. Global completion rates from Steam, refreshed daily.

Zombie-que
Use flares to light 15 zombies on fire.
9.1%

The One Free Bullet
Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!
9.6%

Conservationist
Kill five enemies with the same energy ball.
11%

Pacifist
Contain the Citadel core without killing any stalkers.
11%

Car Crusher
Use the cars to squash 15 antlions in Episode One.
16%

Think Fast!
Kill an Elite Soldier with his own energy ball.
27%

Live Bait
Help Alyx snipe 30 enemies in Episode One.
29%

Citizen Escort
Don't let any citizens die when escorting them to the escape train.
33%

Escape From City 17
Escape City 17 with Alyx.
49%

Attica!
Destroy the gunship in the hospital attic.
51%

Elevator Action
Survive long enough to get on the parking garage elevator.
54%

Containment
Contain the Citadel core.
60%

Watch Your Head!
Make it to the bottom of the Citadel's main elevator shaft in one piece.
62%
Percentages are Steam's global unlock rates across all players who own Half-Life 2: Episode One, refreshed daily. Under 5% is marked in the lit blue.