Alien Swarm achievements
1,822
(660)

Alien Swarm

3.3 from 76 votes

There are a maximum of 66 Alien Swarm achievements worth 1,822

2,598 tracked gamers have this game, 68 have completed it (2.62%)

Achievement Details

Short Controlled Bursts in Alien Swarm

Short Controlled Bursts22

Complete a mission with no friendly fire incidents. Four marines must be present in the mission.

  • Unlocked by 531 tracked gamers (20% - TSA Ratio = 2.20) 2,598  
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