Alien Swarm achievements
1,956
(660)

Alien Swarm

3.4 from 62 votes

There are a maximum of 66 Alien Swarm achievements worth 1,956

2,104 tracked gamers have this game, 47 have completed it (2.23%)

Achievement Details

Pistols Expert in Alien Swarm

Pistols Expert31

Kill 250 Swarm with Twin Pistols.

  • Unlocked by 215 tracked gamers (10% - TSA Ratio = 3.13) 2,104  
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