Steel, hit me up if you want, I recently finally beat Halo3 on normal, lol(Online Multiplayer is too much fun lol). I'd love to do it on Legendary. We would have to either do it over a week, or do it in one day. I think a buddy of mine knows where all skulls and terminals are, so maybe the 3 or 4 of us can do all that in one sweet run.
