I've played this for about an hour and made it to the third section; I have yet to complete it because of the obstacles and that weird bug when hitting a slope.
Lovely atmosphere, nice controls, a few bugs but overall pretty good. If the developer could patch out the bugs then I think this would be very enjoyable although I don't think they get to change anything about the game right now.
Also if you press spacebar it plays the ending (I deserve this small victory).