I love the art style of this game. It's cool to see some of the drawing process on the the itch page too. You're a very talented illustrator and animator! Plus I like how the whole game is black and white until the monsters show up and you're collecting the blood vials and you add that deep red colour. It really stands out.
It would be really cool if the monsters were a little more threatening. Maybe if they moved faster or disappeared and reappeared each time you turn your back to them! Something like that, I'll let you decide. Overall, great entry!