Those are some cool mechanics. I like how visually you implemented the degrees of temperature and the different ranges of ability based on range. Did the mass of the player relate to temperature gain/lose?
I think if instead of time driving your -7 to 7 range but something else (movement or shooting or something else) it wouldn't feel so punishing. Instead of paying attention to what i'm doing or what i can do, i'm just watching the timer. Thanks for the game, there's some great stuff going on.