Very interesting concept with a nice artstyle! I lasted 187 seconds and I will definitely replay it another time, it was fun !
I imagine it is a bug , but some monsters disappear & appear right next to me. It feels very unfair...
The level design would probably gain from having more thoughts into it. You can easily loose track from where your crown is going because it lacks obstacles. There are just too many throws you can do where you can't find your crown back, it's just to hard to predict and feels frustrating.
You also need to work on a pathfinding system, as monsters are likely to get stuck... I imagine it could get exploited.