A very immersive experience. It was a good idea to combine health and temperature, feels intuitive. Also, there are multiple endings? How do you get them?
One gripe: when I go through the door at the end of a level, it looks like there's nothing behind it and the character falls down offscreen, with the camera following him for a split second. Look a bit weird, you may want to change that.
Otherwise, a very good entry!