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Halo 3

Xbox 360
  • 5,655,636 Achievements Earned
  • 228,416 Players Tracked
  • 79 Total Achievements
  • 7,511 Obtainable EXP
  • 1,750 Gamerscore
  • 9,473 100% Club
Citadel Skull

On Citadel, found the hidden skull.

25
22.42% Rare - 91.00 EXP

You have not earned this achievement yet