Get to the third X-hunter stage and continue until reaching a location with two ladders, one on the ground and one near the ceiling, that is unreachable. Lure a bat towards the ceiling ladder. Use the ICQ on the bat, then jump on the bat to reach the ladder. Kill the man with the shield. Allow the bat that appears to follow your character. Shimmy across the wall to the single spot without spikes. Quickly tap B, A to reach a safe spot. Walk up the small set of stairs to find more spikes. Bump into the bat that followed your character to become invincible for a short amount of time. Quickly move past the spikes and use an energy tank, Shimmy down the left wall until your character falls into a room with a capsule. Enter to get the Dragon Punch. To use it, press Forward, Down, Down/Forward, Y after your character is at full health.