Chocobo Joust is a Final-Fantasy-themed remake of Joust for the Nintendo DS.In the game, you'll find yourself flying your Chocobo character around, collecting coins, pecking at and dodging enemies. Source
I don't have a wii u anymore to test it myself, but if homebrews are not visible on the wii u menu I think you can press L + R + minus to open the plugin menu, there should be an option called "homebrews on wii u menu" or something similar
Or when your player dies, you can say in code, if enemy exists, do nothing, but if enemy does not exist, then create enemy at certain spot. (This would be a pain tho for lots of emeies)