Getting through Mt. Coronet can be a bit bothersome, but you'll get through it as long as you sort of pay attention to where you're going and don't get distracted by the places you really don't have to go. Just follow the video and it'll tell you how to get through if you're stuck. At the very top, you'll have to fight against Mars and Jupiter in one fina- well, actually not so final fight anymore. But it's still a very cool fight.