Lol, this game looks like it was probably a lot of fun to make! I really liked the lighting used in the initial scene of the graveyard. Didn't feel too long or too short, and I made it to the end and shut that party down!
If I were to give any pointers on things that could be improved, only one thing really comes to mind. The cardinal directions for the arrows seemed to be even in all directions. But when using an isometric environment, you actually move faster left and right than you do up and down. That's the sort of perspective that isometric environments try to emulate. I'm not sure what the exact math would be, but if you were to make the up and down movement speed 50% of the left and right movement speed it would likely give a more natural feel to the movement.
Either way, nicely done! Proc-gen is no easy task! Thanks for participating Philou! ^^