Alien Swarm achievements

Alien Swarm

3.3 from 72 votes

There are a maximum of 66 Alien Swarm achievements worth 1,858

2,427 tracked gamers have this game, 51 have completed it (2.10%)

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 1,124 tracked gamers (46% - TSA Ratio = 1.46) 2,427  
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