Love the creativity and the idea that you thought of for the jam theme! I think you should add an interactive tutorial instead of text tutorial, since beginners (like me) are really dumb to sometimes understand text! Overall, a really great JS game, if not, probably the best I've ever seen!
The game is not friendly for beginners at all. You should make an interactive tutorial for people to understand, or like an NPC that guides you to the first quest.