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Defense Grid

Xbox 360
  • 159,113 Achievements Earned
  • 31,069 Players Tracked
  • 22 Total Achievements
  • 17,752 Obtainable EXP
  • 300 Gamerscore
  • 624 100% Club
Siege Breaker

Survive all 99 waves on any Grinder challenge mode.

25
16.40% Rare - 294.00 EXP

You have not earned this achievement yet