Beautiful, challenging, intense, amazing.
I love the graphics, minimalistic, yet beautiful in the way they are made, and the soothing music and lovely sound effects add to it a lot as well.
The gameplay concept works in pretty interesting ways, with the hero losing abilities, rather than gaining them, through out the game, making this a challenging, but so fulfilling adventure it's awesome.
The story is beautiful, really thought-provoking, and the best thing about it is that we are not even aware of what is really going on all the way to the very end, keeping us hooked all the time.
Only problem are slightly slippery controls, but I have commented on that in many games done by you. Great games, but controls are always a bit off for me.