Alien Swarm achievements
1,778
(660)

Alien Swarm

3.4 from 81 votes

There are a maximum of 66 Alien Swarm achievements worth 1,778

2,799 tracked gamers have this game, 88 have completed it (3.14%)

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 573 tracked gamers (20% - TSA Ratio = 2.21) 2,807  
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