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

2,595 tracked gamers have this game, 68 have completed it (2.62%)

Achievement Details

Perfect in Alien Swarm

Perfect34

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

  • Unlocked by 231 tracked gamers (9% - TSA Ratio = 3.35) 2,595  
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