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

2,423 tracked gamers have this game, 52 have completed it (2.15%)

Achievement Details

Under the Gun in Alien Swarm

Under the Gun15

Roll under a Swarm Ranger projectile.

  • Unlocked by 1,102 tracked gamers (45% - TSA Ratio = 1.47) 2,423  
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