Alien Swarm achievements

Alien Swarm

3.3 from 83 votes

There are a maximum of 66 Alien Swarm achievements worth 1,797

3,011 tracked gamers have this game, 92 have completed it (3.06%)

Achievement Details

Clear Firing in Alien Swarm

Clear Firing14

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

  • Unlocked by 1,460 tracked gamers (48% - TSA Ratio = 1.44) 3,050  
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