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

Hat Trick in Alien Swarm

Hat Trick11

Complete 2 co-op missions online. Earns a Team Fortress 2 parasite hat.

  • Unlocked by 2,546 tracked gamers (85% - TSA Ratio = 1.08) 2,994  
Do you have a question about this achievement? Please post it in the Alien Swarm Forum