Alien Swarm achievements

Alien Swarm

3.4 from 75 votes

There are a maximum of 66 Alien Swarm achievements worth 1,833

2,543 tracked gamers have this game, 65 have completed it (2.56%)

Achievement Details

Perfect in Alien Swarm


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

  • Unlocked by 222 tracked gamers (9% - TSA Ratio = 3.38) 2,543  
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