K last night i was playing kameo awsome game right but i decided to goto sleep anyways the game was still on just paused and my brother decided to sighn me off while the game was still running. I guess he played on mine for a while but then with the game unpaused he pressed the center button and signed me out then he signed himself in. Immidetly he was given all the achivements i had unlocked wtf. Just thought id share this little glittchy tricky.
I guess this would really only be helpfull if you had more than one account on one 360 but hey whatever i think i discovered it which is awsome.
I believe you can do the same thing if you copy a game save to someone elses 360 they get all the points right away, just they wouldn't get the ones that are unlocked via XBL.
umm, wuldn't that be like not actually achieving the achievements. I don't know if you do or not, but some people take pride in their hard earned achievements. Well, enough of the philosophical stuff, Nice find
wanna copy some achivment points click here 
3 Card Poker Champion!
Linear Mode
