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Alien Swarm: Reactive Drop

Steam
  • 594,857 Achievements Earned
  • 41,314 Players Tracked
  • 198 Total Achievements
  • 67,762 Obtainable EXP
  • 61 100% Club
Prototype Professional

Kill 250 Swarm with the Prototype Rifle.

17.21% Rare - 50.00 EXP

You have not earned this achievement yet