this challenge is simple, survive as much as you can against gcnmario's omega while using gcnmario's zero.
more time you survive, more points you'll get.
the winner of the challenge is the one who makes more points
-extra 100 points if you use the correct stage and music, you may figure them out :P- here is the link to find omega http://gcnmario.free.fr/mugen/ozero.html
and here to find zero http://gcnmario.free.fr/mugen/zero-svc.html