This secret level can be found within the first labyrinth Spittle Maze on Saliva Island. You will need Risky's boots in order to gain access to this level. When you first drop down into the labyrinth, you'll land on a big step with you're only options being go back up or go right deeper into the labyrinth. You'll need to use Risky's boots and charge into the step, Shantae will charge through a blocked hidden passage way that leads you into a small re-creation of the Water Dungeon from the original Shantae on the GameBoy Color. The graphics and music will change to that of the original GBC game. Shantae and all enemy sprites will remain how they look normally. At the end of the secret level, you will see 3 big jars which will contain 1 Pirate Flare, 1 Super Monster Milk and 1 Auto-Potion.