Alien Swarm achievements
1,956
(660)

Alien Swarm

3.4 from 62 votes

There are a maximum of 66 Alien Swarm achievements worth 1,956

2,103 tracked gamers have this game, 45 have completed it (2.14%)

Achievement Details

Perfect in Alien Swarm

Perfect35

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

  • Unlocked by 172 tracked gamers (8% - TSA Ratio = 3.49) 2,103  
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