Great effort! the pixel art is cute and the bat mechanics are fun.
For critiques, I think the vampire base movement feels a little slow/sluggish. I know the bat is supposed to rectify that, but the majority of the time is as a base vampire, so you want it to feel good. The villagers with pitchforks were way too hard to kill. I’m sure that was a design feature, but the pitchforks stick out so much that the overwhelming majority of my shots did nothing but hit the pitchfork. Some stats at the game over screen would be nice, maybe time survived or villagers killed. Finally, some sound effects and music would add a lot of polish.
Overall, fun game!