wat u do is change ur clan tag to @@@@ and an error sign will show up. then u join a private match with ur friend. add a friend that is already in the game and an error sign will show up. then while the error sign is still up, turn off ur controller. next u turn it back on, now get on a ledge u can jump off of and when u jump off press back. if done right another error sign will show up. hav ur friend shoot u which ever way u want to go, ex: if u want to fly up really high hav ur friend shoot u from the bottom, or fly really far to the right hav ur friend shoot u on ur left side and vise versa, P.S. knifing will work to but shooting is always better