So I take it he sucks blood like Lord Dio from JoJo's Bizarre Adventure (using fingers). It was kinda difficult to get the hang of the controls, but I was able to figure things out after a few deaths. The music is really somber, which is good for atmosphere, but it doesn't quite harmonize with the fast-paced gameplay that's intended.
If you would like to see my submission, please check out Napalm Town: https://itch.io/jam/gmtk-jam/rate/159296