Alien Swarm achievements
1,883
(660)

Alien Swarm

3.4 from 67 votes

There are a maximum of 66 Alien Swarm achievements worth 1,883

2,297 tracked gamers have this game, 57 have completed it (2.48%)

Achievement Details

Perfect in Alien Swarm

Perfect34

Complete a mission on Normal difficulty or harder without receiving any damage.

  • Unlocked by 200 tracked gamers (9% - TSA Ratio = 3.38) 2,297  
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