It's fun, though I'm not sure how to complete some of the puzzle. I've tried turning the crystal into a fire crystal but I can't find how to do that. I assumed it might be behind the flesh monster, but the amount of grinding you need to do to get enough stat to beat it seems impossible (unless I want to take a lot of time grinding 18 ash per battle. that or I missed another puzzle.) I really hope it's intended they're not completable at this point because I would feel really stupid for not finding the solution XD