It has potential, but besides the movement bug it needs to be more generous with bullets (holding down the mouse, they didn't fire very quickly or regularly.) The timer is also too short to even enjoy the game properly... I think finding the 12 gold things is already challenging/fun enough in an invisible maze that you've got to explore and reveal. There's a really solid game here, just hiding behind a few barriers to play. Well done for submitting something, and keep at it!