The art style of the game is cool, I have always liked black and white shadowy looks. The game play is fluid for an endless runner, and I like the idea of endlessly putting the player up against them self.
I unfortunately, am bad at the game and didn't get to see the doppelganger. The level seemed pretty long for as far as I got, so when I fell after what I thought was a far distance, I didn't have it in me to try again.