Loved it! Very unique mechanic, with the jumping feeling fantastic to master and the individual sections of the level escalating in difficulty at an excellent pace. There's a wonderful sense of openness when exploring, but the level design is really well executed that the path forward always felt clear without feeling 'handhold-y' - even in later sections where you can't always see where you should be going at first glance the finding the route always felt intuitive.
Without posting spoilers, the final section was deeply satisfying and felt like a perfect reward :)
Repeatedly tapping the arrow key to move could feel frustrating at times, although totally understand the reasoning behind it given it encourages greater use of the jump mechanic and makes the end all the more refreshing.
Great game :)