Alien Swarm achievements

Alien Swarm

3.4 from 60 votes

There are a maximum of 66 Alien Swarm achievements worth 1,953

1,967 tracked gamers have this game, 40 have completed it (2.03%)

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 896 tracked gamers (46% - TSA Ratio = 1.47) 1,967  
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