cool game! I like how you did the main menu screen, that's really creative! It looks nice too & the music oddly fits for it being a game about sending skeletons into heaven lol!
Scene transitions seems really glitchy. Like the music would skip and it would freeze up halfway through the fading to black. But there didn't seem to be any other bugs I noticed, so that's good. Just wish there was more levels/upgrades/enemy types/etc. It's a really good start though, so good job!