I found a lot of the vertical platforming sections in the green area to be really frustrating - I think the camera was the biggest culprit here, it tends to lag behind the player when moving vertically which makes it hard to see where you're going, especially when moving downwards. There was also just some general finickiness with getting the hair grapple points to activate, I found them to be rather frustrating in general at various points - the slight slipperiness of the player doesn't really combine well with needing to get specifically her head to contact the points. I also wish the runes other than the final set were shown on the menu as well, I had a hard time keeping track of them. Also the menu button could use adding to the controls list, enter was pretty far down my list of keys to check so I didn't find the menu until a good ways in.
Otherwise this is a pretty straightforward and solidly executed metroidvania, I don't have a whole lot to say about it. Map is fairly large and varied for a jam entry, and the visuals are appealing although I don't really get much minimalist vibes from them even with the limited color scheme. The music did feel much more minimalist and I really enjoyed how it kept the same overall structure the whole time just with different instruments coming in and out for different areas, was very clever.