Very cool game! One small thing that could be improved: I think the game needs a bit more stakes (if you excuse the pun). Adding a timer to each level would spice things up a little (you would have to memorise the room layouts on your first runs so you could optimise your later runs, kind of like a roguelike).
Anyways, I always appreciate the more creative interpretations of game jam themes, and this is the first vampire-themed game I’ve played so far, so bonus points for that!