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on the ODST second disc that we got on halo 3
your achievements don't save onto the disc, so if you have deleted your account from the hard drive then yes, you get to keep the achievements.
Your achievements are on your profile and hard drive so yes.
http://www.youtube.com/watch?v=13eDfrMgFQMWhen one is not enough.
Mythic Members on Facebook
Yes, you will.
Cool thanks