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

2,104 tracked gamers have this game, 47 have completed it (2.23%)

Achievement Details

Under the Gun in Alien Swarm

Under the Gun15

Roll under a Swarm Ranger projectile.

  • Unlocked by 927 tracked gamers (44% - TSA Ratio = 1.50) 2,104  
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