Hey, I beat it, it was pretty fun!
Mouse sensitivy as a setting would be great. Well in general I didn't like the camera, it felt like it was getting in my way. Like when planning how to make a jump, I'd factor in how to fix the camera so it doesn't fuck it up.
I didn't like the last level. The side panels felt unreliable and weird (like do you get the boost by running into them?). I also couldn't tell if the crystal were doing anything.
The fourth level took a little while, but it was the most fun I think. Figuring out how to make the jumps was pretty rewarding.
I would've uploaded a video, but I screwed up and the footage's gone, unfortunately.