Serious Sam: Siberian Mayhem
Xbox Series
- 58,294 Achievements Earned
- 8,221 Players Tracked
- 49 Total Achievements
- 16,138 Obtainable EXP
- 1,000 Gamerscore
- 187 100% Club
Complete Siberian Mayhem on Serious difficulty in co-op with enemy multiplier set to at least x2
55
2.91%
Ultra Rare - 730.00 EXP
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