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

2,597 tracked gamers have this game, 68 have completed it (2.62%)

Achievement Details

Sharpshooter in Alien Swarm

Sharpshooter15

Complete a mission with better than 90% accuracy.

  • Unlocked by 1,161 tracked gamers (45% - TSA Ratio = 1.49) 2,597  
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