Arrow keys to move/decide what attacks you use. Space to jump. Z to attack (for newcomers, depending on the arrow keys you press, you can do different attacks with different arrow keys). Z + X for your "Final Smash" (again, for newcomers, basically your "Super Move/Ultimate Attack"). For now the Z and X keys broadcast messages for the attacks, but that's it. However, you can animate/add the attacks with a little bit of programming. You can also use this to showcase movesets.