You are Dixie, and you need the treasure box behind Klampon.
It gives you a Kannonball when you throw it at a Kremling which will help
you get to the bonus room. What is the one way you are not supposed
to do it?
Do a small jump, helicopter spin over Klampon, pick up the treasure box and hit Klampon with it.
Jump on top of Klampon, pick up the treasure box and hit a Kremling a little further ahead.