Yeah, I saw your message on discord. I had no issues with Unity 2020 before the jam, but I guess I should've been more vigilant.
I really want to remake the game some day, and making music and sounds for it is what motivates me to do so, since I didn't really have time for that because I was short on time.
Also, I didn't really want to add checkpoints, because the game is actually pretty short if you get the hang of it, so I was scared people would judge it's length, but if I remake the game and make it longer, that's definitely something I will add. Thanks for the feedback!