so I played your game from start to endboss, and the looks are a improvable, but I think your gameplay is very well made! the cam could be set a little further away, one passages between bosses it feels a little disorientating with the close cam.
the Skills are well made - only the P skill I don t know what to use for.
the Endboss has a bug - if you get killed you spawn outside q.q
the "health" mechanik is also a little unbalanced cause the "normal" vampires who run around don t hurt you at all.
overall those issues are just "transform" or number wise, the code and gameplay is solid and with some higher quality art it would be a game I d want to work further on! I like it a lot!