CO-OP Master Achievement

  • CO-OP Master



    Finish wave 10 on Xbox Live with another player using default settings


    This ones a little tough. Practice and find yourself a partner who is good at this game.

  • Can someone help me out with this achievement? Send a message to HALFDEAD HITMAN on XBOX 360
  • If there's anybody out there willing to help: My GT is my username: Mortal Frailty

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