Alien Swarm achievements

Alien Swarm

3.4 from 56 votes

There are a maximum of 66 Alien Swarm achievements worth 1,945

1,831 tracked gamers have this game, 38 have completed it (2.08%)

Achievement Details

Clear Firing in Alien Swarm

Clear Firing15

Kill 25 drones without friendly fire. Four marines must be present in the mission.

  • Unlocked by 817 tracked gamers (45% - TSA Ratio = 1.49) 1,831  
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