Hmm what to start with...
There was a great use of mechanics, I really enjoyed that spin move! Animations are great and fluid, background would be really enjoyable tho.
I really like the idea with narration, but I wouldn't recommend saying anything in menu, it's the place where people are setting game up etc and some might not even have opportunity to listen to what you say. Also most of the people are visualizers, so in narrative games it's a good idea to add subtitles, they add a lot of depth and help understanding and getting into the plot.
I'm sorry but I didn't finish your game as after climbing a lot of platforms I fell far and far down as I didn't jump to the cliff properly and that was the end for me. Probably because of that I missed big part of theme and plot, but that's also something to work on. As for level design you must remember to make it a bit more narrowed? So don't let someone lose all his 10min progress after 1 mistaken jump, that's how people can quit playing.
Anyway, It was a really enjoyable game and there are some aspects that I really love. Good luck with it ;)