I really love some of your ideas going into this! It has some bad glitches though, mostly to do with how it doesn't seem designed for a larger screen - text doesn't go in the box, and the eye boss' third stage seems unwinnable.
I'd also say that you hide a very good idea behind a slow start. It's possible that some players won't manage the jumping on trees that get you to the first areas with your main mechanic, and some of those sections after are also too difficult.
Like I said, really nice ideas underneath it.