Goodness! Loved the work you did on this game. Making sure to make a comment here as well and give my two cent.
I think adding in more one or two potion effects would really tighten up the gameplay. You can make the ingredients list include a combo of monster parts that can help with skipping monsters if there was a certain pairing people wanted to make their play style. Making boss monsters (Just larger models with new animations) can also allow you to put in different monster parts without making new models.
Also a potion that can slow discover time would be a great addition to make people use sneak more often. As I found myself just spamming the sprint bar and really only using it early on to avoid the bulls. (Lovely work on them btw!) A potion that gives double jump can be also a nice effect for the ghost lake since the environment promotes jumping. As for jumping, maybe add some jump puzzles for extra resource nodes in the plains or any large area.
Again all these are suggestions, and the game is awesome! Feel free to reach out to me if you need any help or just need some new UI art assets in Unity for the crafting UI.