Hot-Foot-It into the Volcano

Run through the archway and turn right at the first Bully. Instead of continuing right, however, hop onto the spinning platform that circles the volcano in the center of the level. When you set foot on the platform, it'll stop spinning, while a spout of lava fires up into the air. Wait for it to stop and then jump into the volcano (you can walk on the sides of the volcano).

Head toward the right, across the platforms in the lava, until you reach the outer walkway that runs around the perimeter of the volcano's interior. Follow the walkway upwards, dodging the spout of fire from the wall, the Bully, and the falling section on the wall to the left. After hopping across a series of small platforms, you'll reach an area with another Bully—this one you should take out. Knock it off the ledge to give yourself plenty of time to creep along the next narrow path.

Climb the pole ahead, reach the top, and turn your back to the next platform before leaping off onto the second pole. Slide down to touch the platform below; then, jump up to the next ledge to claim the Power Star.