Wonder Boy in Monster Land/Round 6

After entering the pyramid, you will need to jump along the platforms, avoiding the spikes on the ground. Watch out for some of the blocks; the movable ones will try to bring you down, and there is at least one block that has a surprise spring.

When you reach the main corridor, jump along the top, stopping just before a blue pillar. Jump on the platform before the pillar to collect some hidden coins.

Head to the right and jump down. The boss door is above and too the left. To defeat him instantly, choose the "No Dinner" option.