Lava Rock Lair

Lava Rock Lair, or World 4-Castle, is the final level in World 4, and the twenty-eighth overall. It is a derelict castle with a few islands in a sea of lava.The boss is Boss Brolder. It's pretty straightforward.

GS 1: There will be two P-Switches. Throw a Brolder on one, then stand on the other to lower the bridge to the Green Star.

GS 2: Enter the purple Warp Box and throw the Brolders onto the P-Switches to release the Green Star.

GS 3: There is a Green Star over the lava. How do you get to it without losing a life? Throw a Brolder onto it.

Stamp: The stamp, which is a Brolder, is on an outcropping next to the purple Warp Box. Climb up to it.