Alien Swarm achievements

Alien Swarm

3.4 from 64 votes

There are a maximum of 66 Alien Swarm achievements worth 1,914

2,205 tracked gamers have this game, 49 have completed it (2.22%)

Achievement Details

Short Controlled Bursts in Alien Swarm

Short Controlled Bursts23

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

  • Unlocked by 424 tracked gamers (19% - TSA Ratio = 2.27) 2,205  
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