Wow, this was a fantastic little puzzle platformer you got here!
I'm not sure what feedback I can offer as it was generally solid all-around: a simple to pick-up but deeply interesting and intuitive gravity-rotation mechanic, nice bonus objectives for the try-hards like me while allowing the casuals more simple main objectives, great art design and presentation, fantastic sense of progression and difficulty as the game goes on, intuitive level design that teaches you core concepts, and so on and so forth! Well done!
If I were to have any feedback, it'd be that I find the default rotation controls very unintuitive, but luckily there is a swap option, so we're all good there (though I'd still say that maybe it should be the default instead because not everyone has patience to look into the options). It can also be a little annoying when you exit the level by accident before you've collected all the bonus objectives, but I guess that's part of the challenge. Finally, I did have a bug one time where I went through a portal and I started the next level with gravity shifted but not the camera, so yeah, there was a weird desync going on there, but it was just the one time and easily put back in sync once I rotated.