to be honest, I am most interessted in your Dialog system!
your game is a solid groundwork to build up!
I would recommend following things meow:
Ajust gravity so the Jumps feel more natural.
Ajust the size of tilemaps to the (new) jumphigh and make them a little smaller so you see more of the world.
The different mechaniks are very nice - at the last level would have been nice if the Vampire was standing next to the exit, so you can run around first and then finish the game by talking to him!
I love the Music it made me very calm and gave some good vibes -> very nec hellish music *giggles*