I like the overall concept of it but there is still quite a few things that could have been improved. For example jump is often time's irresponsive, and the vampire gets stuck on in the jumping animation, though that happens sometimes without even jumping.
The gameplay is fun but it's timing is really strict, I think some lenience in timing and how Much light kills the vampire could be helpful.
The levels are interesting enough, and are really enjoyable. Though tough due to timings, but I like the respawn mechanic, helps keeping the player engaged.
The audio like people said, doesn't suit the game. It is not a bad track in and of itself - But it doesn't suit this type of game, or maybe you could use an DAW(like Audacity) to improve on it.
Otherwise it's a decent game, I thought it was nice.