Managed to get through this glitchy mess, may even pop some achievements. Played campaign on easy and modified my profile half way through so I'm not sure if this is online safe. First time trying this let me know if I did it right. Picked the free account may have limited downloads. http://www.mediafire...9tm4c2f87z3ez3h just read sticky please delete.
I had a problem where I'd get an achievement and my profile would sign out so I used le Fluffie to unlock all achievements (only kinda worked anyways) so I don't know if my profile would effect the save at all, I don't think it would but I wanted to post the warning since microsoft are fun nazis.