Alien Swarm achievements
1,953
(660)

Alien Swarm

3.4 from 60 votes

There are a maximum of 66 Alien Swarm achievements worth 1,953

1,966 tracked gamers have this game, 40 have completed it (2.03%)

Achievement Details

Zero Mortality in Alien Swarm

Zero Mortality14

Complete a mission on Normal difficulty or harder without any marines dying.

  • Unlocked by 988 tracked gamers (50% - TSA Ratio = 1.40) 1,966  
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