Actually crash with some windows message about some error or just not responding? First time starting a Godot app takes seemingly forever. Give it time, next starts should be faster.
And yeah, tooltips for the icons would be nice! And a Igor character that gives some text guidance what is going on and what you should do.

I would have expected that slaves could be used as a blood resource (like the brothel generating money, different task to generate blood).
For progression you could have other named vampires to raid that are progressively stronger and need several updates to overcome. With some banter for winning and losing and of course artwork