Hmm. Definitely more content: New weapons, ranged attacks, enemies that can target the player. Bosses. Obamium that gives one positive skill and one bad one. More levels. Maybe randomly put together rooms, but i like hand crafted levels. More themes? But aside from the content im unsure. If i where to turn it into a proper game, i might want to change the art assets, but the default unity cubes are silly in a good way.