Hey there, I played it, it was fun. Don't know if it's my kind of platformer, so I don't know if I'd buy it, but I'd be down to play more if you make more levels.
I'm a keyboard player, so that's what I tried at first, but the default rotation speed was too fast. Since control key makes it slower, I just held it down continuously. Eventually my pinky got tired, and I switched over to mouse. It felt pretty good actually, so I just used that until the end.
The mechanic were you lost your vision was weird to me. If you just want to clear the level, you'll just kill yourself to get it back, so I felt like it was a bit strange.
The vertical part was definitely the hardest, everything else was pretty reasonable in comparison. Although maybe that's just because I was still learning how the controls worked at that point.
The fact that R sends you back to the beginning, I didn't like. I didn't even notice it was possible to spawn from the last checkpoint at the beginning if you just died. Like, it shouldn't be possible to erase all your progress by accident, R should spawn you from the last checkpoint, and there should be another way to restart from the beginning, like from a menu
Anyway, it's cool! I kind of want to play a really hard level and get very tilted.