Thank you so much for the feedback, it's very reassuring!
I had huge plans for it, but ended up spending too much time figuring out how to implement the time changing system and other small things I didn't have experience with, such as the skeleton mesh for the item and HUD which I still didn't use properly, so as a result I forgot the most important thing, i.e., gameplay, especially the puzzle and platforming elements. :)
Lesson learned, especially for the game jams: make sure that the game is fun and then add bells and whistles.