Serious Sam: Siberian Mayhem
Xbox Series
- 37,050 Achievements Earned
- 6,022 Players Tracked
- 49 Total Achievements
- 34,842 Obtainable EXP
- 1,000 Gamerscore
- 27 100% Club
Beat the final boss in Singleplayer on Serious difficulty without loading mid-battle savegames
50
1.41%
Ultra Rare - 1470.00 EXP
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