Alien Swarm achievements
1,853
(660)

Alien Swarm

3.3 from 71 votes

There are a maximum of 66 Alien Swarm achievements worth 1,853

2,357 tracked gamers have this game, 62 have completed it (2.63%)

Achievement Details

Professional Marksman in Alien Swarm

Professional Marksman36

Kill 250 Swarm with a Marksman Rifle.

  • Unlocked by 185 tracked gamers (8% - TSA Ratio = 3.57) 2,357  
Do you have a question about this achievement? Please post it in the Alien Swarm Forum