This is really fun! As for feedback, it's not very clear when the player has taken damage if you aren't looking at your health bar (my second suggestion improves this also) an easy fix is to add a sound effect.
The second thing is to have the health/temperature bar attached to the player, right above the player. Since the focus of the game is in the middle of the screen, its a bit cumbersome to be looking back and forth between the progress bars and the player.
I noticed you are using unity, if you aren't sure how to implement this it can be done by making a canvas, setting it to "World Space" and making it a child of the player, then you would just have to copy over your progress bars and reposition/resize them. You could maybe even remove the temperature bar, since the player sprite/controller also gives you this information.
Some of the art is also a bit hard for me to see but I love this game overall, you did a great job as a solo.