Tips & Tricks
Secret Level - Boss Rush
Each stage has at least 20 crowns. Get at least 20 crowns and beat each boss of every stage. If you do that in all six stages, a question mark box will appear over stage one allowing you to fight any boss without going through the level
Ghost Castle - Play Pool
Go to Stage 6 (Ghost Castle.) In the first room, don't go up the stairs; instead, go to the place near the rabbit, and you'll see a locked door near a crown. Get the crown, then open the door. Go into the room, and you get to play a round of pool.
You need at least 50 Crowns to get into the door.
Beating the Final Boss
Strategizing Against the First Form: Hit the colored balls on his arms. If you hit them, they will crack. When he swings around, press Z to stand on your tongue. He'll hit your tongue, and you'll fall down, and you won't get hit; you'll also have a chance to hit his arm once or twice.
If you crack all the colored balls, his arms will break off. He will then turn into a tank and either spin and shoot cannonballs or just shoot the cannonballs straight. When he shoots straight, grab as many as possible. Next, get in close and follow him until he does his spin-around move. When he does it, jump over a cannonball and use machinegun fire; if you hit him enough, he'll die. He'll regenerate back to full strength if you don't hit him enough.