Alien Swarm achievements
1,853
(660)

Alien Swarm

3.3 from 71 votes

There are a maximum of 66 Alien Swarm achievements worth 1,853

2,357 tracked gamers have this game, 62 have completed it (2.63%)

Achievement Details

Clear Firing in Alien Swarm

Clear Firing15

Kill 25 drones without friendly fire. Four marines must be present in the mission.

  • Unlocked by 1,099 tracked gamers (47% - TSA Ratio = 1.46) 2,357  
Do you have a question about this achievement? Please post it in the Alien Swarm Forum