Serious Sam: Siberian Mayhem
Xbox Series
- 57,263 Achievements Earned
- 8,107 Players Tracked
- 49 Total Achievements
- 16,297 Obtainable EXP
- 1,000 Gamerscore
- 181 100% Club
Complete Siberian Mayhem on Serious difficulty in co-op with enemy multiplier set to at least x2
55
2.84%
Ultra Rare - 745.00 EXP
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