Hello! This is a really cute game! I love the art style! There were only a couple issues I had but otherwise the game is really good!
When I was upgrading vampirism there were a lot of floating-point numbers. You might want to limit the amount of numbers shown.
Also, I thought the three horizontal lines would be a pause menu or something, I didn't expect for them to take me back to the main menu and reset my run. Was a little bummed that happened. Might want to put a warning or continue button on the main page to prevent this from happening.
This is a really cool game! Good job!