This is so cool!! I love games that focus on player movement, and I gotta say, this one feels really good. The parallax background is also really cool, and I definitely feel like I'm on an alien planet. I didn't personally have trouble making the jumps, I thought they were very reasonable. I appreciate that you included a slow-mo toggle though, since that really helps with accessibility.
I'm honestly not sure what to critique. Sure, there isn't a huge amount of content, but I think you made the right choice to focus on the player movement system over everything else. This is one of my favorite entries of the jam!