I really liked, it, nice clean movement with a cool interesting mechanic. I got to level 5 without realising that not moving reduces temp though :p Maybe consider looking into coyote time since a lot of the time i felt like i jumped at the right time only to fall off a platform. (or maybe its just skill isue :pp) Also maybe its a nitpick but the grass texture hurt my eyes a bit. Very challenging, good level design, i see big speedrun potential, even found a few skips, good job on your first gamejam!!