Alien Swarm achievements
1,810
(660)

Alien Swarm

3.3 from 78 votes

There are a maximum of 66 Alien Swarm achievements worth 1,810

2,679 tracked gamers have this game, 75 have completed it (2.80%)

Achievement Details

Professional Marksman in Alien Swarm

Professional Marksman34

Kill 250 Swarm with a Marksman Rifle.

  • Unlocked by 224 tracked gamers (8% - TSA Ratio = 3.44) 2,679  
Do you have a question about this achievement? Please post it in the Alien Swarm Forum