Teenage Mutant Ninja Turtles: Shredder's Revenge Trophy: Cowabunga It Is Character: Michelangelo Stage: 5 Objective: Do a 250 hit combo. Tip: pick a small robot near a wall and just keep mashing the attack button. You are advised to wait for the robot to fall a bit before continuing mashing in each repetition, and you may also walk a bit forward once in a while if your character gets pushed away from the robot.