Good atmosphere, very cinematic and the story is symbolic and good. It's really well executed for a narration based game.
However, I didn't find the "minigames" interesting. The sniper minigame took me a bit to figure out, the walking minigame was too slow, etc.
Once, I didn't know I had to click to advance the cutscene forward so I kind of thought the game ended right there and then. Fair though, I haven't played games of this genre before so it could be personal.
Amazing story.