Pretty good take on a difficult concept. I think what makes this game so challenging is that there are three different things for the player to control, and each is mapped to its own set of direction keys. It feels a bit like trying to play a game with three analog sticks. It's a little much to juggle for a fast-paced action game, but fortunately the action in this game moves relatively slowly. Still though, it's pretty manageable once you get the hang of things.