luiginumberone

Best answer as chosen by Asker / Ratings
Play as Mario. Go down to the end of the slide. Then, get on the lift, and jump off onto the platform halfway up. Talk to the Bob-Omb Buddy, and have him ooen the cannon. Go back down, and then get in the cannon. Now you have to shoot across and grab the tree. Walk carefully along the path, then use Mario to Wall Kick off the walls up to the icy bridge to platform.

However, I think I did this with Luigi, and it was much easier. All you have to do is backward somersault and land on the next platform. I may be wrong though, as that was a few months ago.