Really cool game! The music was by far my favorite part, it's really beautiful and haunting and I loved the way it seemed to shift seamlessly between areas. I also really liked the pixel art, I certainly didn't expect an industrial aesthetic in what seemed like a game themed around the sea, but it was executed very well and played strongly into the Rust theme.
The character felt very slidey and it was often hard to land on some of the narrower platforms in the game. There also seemed to be no limit to falling speed, meaning in some areas it was possible to fall through or get stuck inside the floor. The invincibility frames on enemies felt a bit excessive and did too good of a job discouraging aggression in my opinion, leading me to simply running past enemies whenever possible. Coupled with those issues, the fact that every contact with spikes reset the whole room felt overly punishing and in the end it was a bit too much for me.
That said, I had fun exploring around and did manage to find 4 out of the 5 collectibles!