This is such a great concept! The level design was really good, each physics mode had clear uses and switching felt impactful; I liked that there was often multiple ways to combine/toggle between them to solve each area. The different physics modes were also just fun to play around, it never felt punishing to just try something and see where it got me.
The music and art are really clean, the minimalist styles really supported the puzzles well, I wasn't struggling to focus or see what I was aiming for at any point.
I agree that the labelling of input confused me briefly, but it did click when nothing else was working for activating the levers. I also found the controls slightly tricky to navigate, I was clicking the toggles with my mouse but that meant transition between some quickly was harder than others ( I actually didn't see that the number keys were assigned to each one when I played through, I went back and tried it with them afterwards but actually found that a bit harder to do all with one hand (didn't seem to like my num keys)), but ultimately these were really minor things.
Overall an awesome entry, I can really see how you could build off the foundations to add more levels, and clearly you've put a lot of thought into the ones you've already built! Great work by the whole team!