Alien Swarm achievements
1,909
(660)

Alien Swarm

3.4 from 67 votes

There are a maximum of 66 Alien Swarm achievements worth 1,909

2,220 tracked gamers have this game, 51 have completed it (2.30%)

Achievement Details

Under the Gun in Alien Swarm

Under the Gun15

Roll under a Swarm Ranger projectile.

  • Unlocked by 1,009 tracked gamers (45% - TSA Ratio = 1.48) 2,220  
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