The game looks really cool, reminds me of The End is Nigh. And the sound design is great too.
Interesting mechanics, most of the stuff do to with the other self was cool. It's interesting to have a grab instead of a well jump but I didn't like its responsiveness. If you hold it a bit before reaching a wall, it should grab on once it gets in range imo.
Hell, maybe I'd just have the character automatically grab on when you hit a wall (once per jump like it works now, but auto)
But overall I really like it.
PS. My browser crashed at level 15 or so so I didn't see the ending :(