Alien Swarm achievements
1,822
(660)

Alien Swarm

3.3 from 76 votes

There are a maximum of 66 Alien Swarm achievements worth 1,822

2,605 tracked gamers have this game, 70 have completed it (2.69%)

Achievement Details

Railgun Specialist in Alien Swarm

Railgun Specialist34

Kill 250 Swarm with a Rail Rifle.

  • Unlocked by 229 tracked gamers (9% - TSA Ratio = 3.37) 2,605  
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