It took me a while to figure out what I was supposed to do since there was no tutorial, I actually ran around in circles for 3 minutes trying to figure out what was going on.
After I figured it out, I see what the idea is! So I started brewing together combinations of potions to prepare for the final fight.
However, unfortunately, after getting to the fight it soft locked and kept playing the same animation over and over. So I didn't get to actually fight him :/
That said, this is an interesting idea and the presentation is top notch! Good work, other than fixing those bugs, this game could definitely use a tutorial!