It would be nice to have some menus to change weapons and armor and stuff. Also, in the final version (or around the time you put in main menu, options menu, etc.), I'd recommend letting people change the control scheme. I, for example, like jump to be Z, X attack, and C for platforms, but someone else might like a different set of keys. You wouldn't want something as simple as controls to get in the way of people enjoying your game.