Several enemies can be copied off of at the start. In an area with bomb bats, become a UFO to move anywhere you want. With the UFO ability you have, go back to the starting area and go below the area to blow away the ice blocks to enter a secret room with a yellow switch. Navigate the UFO area and use the door by a mushroom head. Take either path and defeat any of the mini-bosses you desire to battle. You’ll next be given some candy to be invincible. Knock out some enemies in a sloped path then go through 2 doors to take on small knights. Defeat them all and the goal will appear.