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

2,428 tracked gamers have this game, 51 have completed it (2.10%)

Achievement Details

Zero Mortality in Alien Swarm

Zero Mortality14

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

  • Unlocked by 1,234 tracked gamers (51% - TSA Ratio = 1.39) 2,428  
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