Alien Swarm achievements

Alien Swarm

3.4 from 75 votes

There are a maximum of 66 Alien Swarm achievements worth 1,832

2,461 tracked gamers have this game, 60 have completed it (2.44%)

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 1,242 tracked gamers (50% - TSA Ratio = 1.40) 2,461  
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