Alien Swarm achievements
1,858
(660)

Alien Swarm

3.3 from 72 votes

There are a maximum of 66 Alien Swarm achievements worth 1,858

2,405 tracked gamers have this game, 61 have completed it (2.54%)

Achievement Details

Perfect in Alien Swarm

Perfect34

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

  • Unlocked by 206 tracked gamers (9% - TSA Ratio = 3.40) 2,405  
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