Alien Swarm
Steam
- 1,354,673 Achievements Earned
- 82,960 Players Tracked
- 66 Total Achievements
- 11,587 Obtainable EXP
- 3,318 100% Club
Complete 2 co-op missions online. Earns a Team Fortress 2 parasite hat.
88.76%
Common - 24.00 EXP
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