This is a very interesting and unique concept but the actual gameplay experience left me rather confused and frustrated. The character moves rather slow, it is often hard to discern where you can and can't go. The game lagged pretty badly whenever I used the flamethrower (which might be an issue on my part) and it was hard to tell when the flamethrower hit something or what it could even interact with. The one thing that ultimately caused me to quit is when the temperature would suddenly start dropping rapidly in some places and I couldn't tell what caused it or how to stop it, which ended with me dying and respawning repeatedly.
It's a shame because you obviously put a lot of work into this and the art is quite nice but I just didn't manage to get a grasp of the mechanics at all.