I'm stressederik in the challenge discord. I don't really wanna post spoilers here
Oh I managed to finish it! I just didn't see that object for the longest time. What an incredible game, very clever! I laughed out loud at many things ("Don't wake the mummy").
I'm not a fan of having to click use/pick up/etc. every time and combining some of the objects didn't make a lot of sense so had to brute force that. Otherwise it's very well done!