I really love the theme music! To me, there was a bit too much text that couldn't be avoided both before and in-game which detracted from getting into actually gameplay. I would work to be more terse in your writing, and let the player fill in the gaps with their imagination. The thetherlure is an interesting mechanic concept-wise, but I will admit I had a lot of difficulty getting "the hang of it" to the point I could really enjoy the level rather than thinking so hard about it-- but I think I needed more time to get the feel for it. Perhaps some more guidance, or an enticing first few challenges would help cement the controls for me... again I got pretty distracted by all the small text when I wanted to focus on my learning to actually manoeuvre the character.