So, when you get to the burntrap boss fight, you have to find a basketball sitting in one of the charging stations. Toss the ball into the vent, and burntrap will grab it. He'll then transform back into purple guy, and start ballin, but then suddenly, mimic will appear out of nowhere singing gangster's paradise, and take the ball, and then purple guy gets absolutely DUNKED on by mimic, and then the multiverse collapses. The end.
