You press "e" on frame 330 and then edit tori till you win the match.

I'd prefer if you don't shift+space (so that it resembles actually having to save in a server where you wouldn't get to edit each frame but if you have trouble or want to do something really unique then shift+space is fine.

The idea of the event is to try take on the challenge as hard as possible while honing or showing off your skills.