Nice game. I liked the music and ambience .
I don't think the level design is too hard, but I would love if there was some sort of a mid-way checkpoint. It is frustrating having to repeat all the very basic jumping challenges before you can return to the part you are having trouble with.
Thanks for your feedback. We are still thinking about how to make it more player-friendly, i.e. less punishing. Shorter level, easier level, easier controls (not to have to slow down during a jump might be too hard?) etc. But we so far think that those changes would all destroy the overall concept of the game. A mid-way checkpoint could be a great idea though. So maybe if you don't make it all the way to the end of the level, you and your doppelganger get respawned mid-way, if you (or him) have already been there and if that's still to hard you get incrementally respawned closer to the end of the level, automatically "saving" every successful jump you make? :-)