I loved this game, I've played through it twice now. Demo or not, this is absolutely outstanding, I'm a big fan of indie games, and with that said this is one of the best I've played, a minor bug I ran into was in the Bullet boss (to not revel to much) my character would swing at a trap, and instead of destroying it, they would instead get stuck in the trap, further more the traps seemed to immobilize my character, not just while they where active, but if i fell into a trap, got hit, which made my character physically out of the trap, i would be unable to move in one or both axis until I got hit at least once more, sometimes twice more, making it impossible for me to fight, revive, move, or win against the boss at all. That and one other comment I have is might consider offering a means to replay boss fights, I really enjoyed them and while restarting the game to play it again is fun, its more enjoyable to more easily re-fight bosses, all that aside tho I love this game, I think it has real potential