Music and SFX was a bit to harsh (once I got it on :P), and obviously you know the bug about the sound on the main menu.
Think you added to many different abilities, leaving it a bit confusing for the player when in game. I know it's all laid out somewhat on the first menu screen, but that's lost and forgotten in game.
I'm not sure how it links into the theme really, but I do feel it has potential to be progressed into a really good game.
I imagine, a bit like mine, there was more you'd do, if not for the time constraint :), and perhaps some of this feedback doesn't take that into account (like some feedback on mine).