Cool concept. And I really liked the use of 2D and 3D. Salem freaked me out the first time I walked by!
While interesting, the main mechanics got old pretty quick. Just handing quests to adventurers got tedious by the third day.
Also: I almost completely ignored the potions. After a couple of days, I just started sending all the adventurers to fight the same thing, and they leveled up that way to the point where I easily defeated the final dragon. I think I handed out 4 total potions (one of which was 0% quality because I didn't understand what I was supposed to do for the stirring mini-game).
Overall, though, quite a solid amount of work for a jam game! Good job :D