think of it this way...
to do co-op with a friend like if hes at your house or something, you would need 2 keyboards, and you would need to make it so that keyboard controlls the other character....
if your saying like on a multiplayer arena map, i think its completely impossible.
what..what would you add the script to a character and that will make that character playable by a second person?
why not just team up with someone during a multiplayer match and pretend your doing co-op?
and what if your talking about doing missions together in a co-op mode...impossible...
NoOoOoB