Alien Swarm achievements
1,787
(660)

Alien Swarm

3.3 from 83 votes

There are a maximum of 66 Alien Swarm achievements worth 1,787

2,976 tracked gamers have this game, 89 have completed it (2.99%)

Achievement Details

Railgun Specialist in Alien Swarm

Railgun Specialist33

Kill 250 Swarm with a Rail Rifle.

  • Unlocked by 271 tracked gamers (9% - TSA Ratio = 3.31) 2,987  
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