The Boot Dash requires a long runway to activate, however, there is a way to do a Boot Dash without having to find a suitable runway. When using the WiiU gamepad, you can use either the left-stick or D-pad to control Shantae. For some reason, pressing right on the D-pad will override the left input from the left-stick but continue to register as if you're running in a straight continuous line. This allows you to activate Boot Dash on very small runways to gain items and areas that would otherwise be unreachable without other items. To Boot Dash in the left direction, hold the left-stick left and tap the D-pad right over and over to make Shantae shift in place, then simply stop pressing right when activation pops up and Boot Dash. To Boot Dash right, do the same steps as above but instead stop holding down left on the left-stick and continue your Boot Dash with the D-pad held to the right.
When playing the game on a television, you will have to use the WiiU gamepad to select items and switch between the map, item screen and key-item screen. Though this is incredibly handy, sometimes this causes trouble when trying to maneuver Shantae and select a item to use during intense fights that require concentration. For times like these, simply pause the game and switch the play-mode to the WiiU gamepad. While in this mode, when you press the + button you are able to pause the current game and go to your item menu to which you can equip what you need, then jump back into the fray exactly where you paused it.
Complete the game for the first time. You will be given the option to play in "Pirate Mode" next time you start a new game file. If chosen you will start a new game but with all of Risky's items already obtained. No health or upgrades from previous game files are carried over however.
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.
These wallpapers can be unlocked by meeting certain requirements during game completion. (Note that these can be obtained with or without Pirate Mode activated.)