I play multiplayer all the time but i never play single player. Does anyone have a game save for the xbox with a profile that has all the extras unlocked?

Why don't you do it yourself? You've probably played multiplayer enough to be able to complete all the missions easily.

I work full time and go to school. I honestly dont have a lot of free time. I usually only have enough time to play one game before i have to go to bed. Any help would be appreciated.