I had some problems with understanding how to pass the game and when it happened I was surprised. Did I miss something? :D
I really enjoyed the game though. I love platformers - I think it is my favorite 2d game genre. It is very well executed though quite hmmm... usual? Don't get me wrong - the game is lovely however all the mechanics are very well known and the game seems to do not introduce anything unique. I would say that adding something 'special' would really benefit the entry.
Also the level design with the water at the beginning made me think I will be able to swim at certain point as there are visible things 'under' the water :D.