Shantae and the Pirate's Curse

Collect all Dark Magic from the twenty Cursed Cacklebats. When you face the Pirate Master in the Palace, he will be Full-Power Pirate Master. Defeat him to view the true ending.
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Successfully complete the game. Then, start another playthrough on a new saved game. In this mode you will retain all of of Risky's items from your previous session, but no health or upgrades will be carried over.

Complete the indicated task to unlock the corresponding wallpaper.

Pirate Shantae and friends: Complete the game with less than 100% completion in over 2 hours.

Shantae and Risky Boots: Complete the game in less than 2 hours.

Shantae vs. ScorpGal: Complete the game with 100% completion.

Play the first labyrinth, Spittle Maze, on Saliva Island. Note: Risky's boots are required. When you first drop down into the labyrinth, you will land on a big step. Use Risky's boots to charge into the step. Shantae will pass through and enter a hidden passageway. Follow it to reach a version of the Water Dungeon from the original Shantae from the GameBoy Color, including retro graphics and music. At the end of the secret level are three big jars with 1 Pirate Flare, 1 Super Monster Milk and 1 Auto-Potion.