Wow this was fun! Really enjoyed the game overall: good humor, the dialogue was funny, simple but awesome art and great concept that fits the jam's theme perfectly! However, I have some neat picky suggestions and observations for the game:
Dialogue at first is really funny but it can get easily repetitive over time if you keep losing (which I suppose it will be lot due to the games main mechanic). Maybe add a skip option so that you don't have to spam the spacebar.
Important items were somewhat hard to get (or I was really unlucky) which frustrated me a little bit towards the 20ish minute mark since I was repeating the process of dying on purpose to get key items to get to the right chest. However, at the end, I found out a funny bug by accident that can exploit the whole game. While I was spamming the spacebar to get an item, I accidentally pressed the spacebar while I was already in game again which brought up the death shop again. I quickly realized I could just spam the spacebar to get multiple items without spending lives which greatly helped me to finish the game.
There's a visual bug where if you first go to a cold area the cold filter stays even if you go to a hot area or vice-versa.
Nonetheless, as I said, this game was great fun and I really enjoyed playing despite the little things I mentioned. Congratulations on finishing and publishing your game! Hope you can try out our game as well and give us feedback, our idea was pretty similar to yours!