Appreciate the feedback! Very valid points. While I consider the current art a "placeholder", there has been some effort to give it a good and consistent look (maybe too much). At some point in the future, the art style might get changed completely, but the early details and animations should carry over.
I'm glad that the combat is solid, but you're right in that it needs more depth. Enemies that are afraid of fire, explode or will try to put themselves out are just some examples of what's in planning. There's also a plan to rework the fire meter into a combo meter of sorts, where landing attacks consistently will raise it and getting damaged or not attacking will decrease it, for example. You're also correct about the intention with the dodging, it does need some work and possibly a different way to prevent easy spam.
I like the suggestions for fire puzzles! One of my inspirations for them is the Portal series, and I have a couple of notes on more advanced puzzle types, it would just be difficult to implement, include and teach about them all in this short of a demo, but they'll definitely be a part of the full package!