Cute artwork and cool music!
I personally think the character movement is a bit ... hmm, I'm not really sure how to say it. Like, when I see the bats movement, I think the character would move with the same manner too, but when I actually move the character, it's tile-based-movement (? cmiiw), not as quickly as the bats, and there's something about its animation that I feel kinda "off". I'm not really sure what is it.
But, anyway, this game has a lot of potential and you guys did a really awesome work here from the artwork, music, and level design! Great job!