I've played to level 7 so far. I had fun! I like the visual ambience. I liked that I can go up walls and how the level design helps you learn.
I had difficulty understanding which wall types and corners are traversable and which ones aren't. I wondered if there could be more color coding or other visual cues to help with this? It seemed like some of the eye triggers reset when you recall the arrow and others don't, but they look similar. I also wondered if preparing the bow, shooting, and recalling the arrow could all the be the same button.