Alien Swarm achievements
1,833
(660)

Alien Swarm

3.4 from 75 votes

There are a maximum of 66 Alien Swarm achievements worth 1,833

2,542 tracked gamers have this game, 65 have completed it (2.56%)

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 516 tracked gamers (20% - TSA Ratio = 2.21) 2,542  
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