Serious Sam: Siberian Mayhem
Xbox Series
- 57,780 Achievements Earned
- 8,163 Players Tracked
- 49 Total Achievements
- 16,178 Obtainable EXP
- 1,000 Gamerscore
- 185 100% Club
Beat the final boss in Singleplayer on Serious difficulty without loading mid-battle savegames
50
3.43%
Ultra Rare - 618.00 EXP
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