Serious Sam: Siberian Mayhem
Xbox Series
- 36,398 Achievements Earned
- 5,974 Players Tracked
- 49 Total Achievements
- 45,089 Obtainable EXP
- 1,000 Gamerscore
- 18 100% Club
Beat the final boss in Singleplayer on Serious difficulty without loading mid-battle savegames
50
1.31%
Ultra Rare - 1815.00 EXP
You have not earned this achievement yet
Log in to view progress