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Defense Grid

Xbox 360
  • 158,932 Achievements Earned
  • 31,034 Players Tracked
  • 22 Total Achievements
  • 17,802 Obtainable EXP
  • 300 Gamerscore
  • 622 100% Club
Salvage Rights

Destroy at least one boss alien.

5
89.66% Common - 54.00 EXP

You have not earned this achievement yet