Art, design and puzzles were good, especially the art and design. What I don't like is when a way is open, but the character talk to himself so I should not go that way.
SPOILER
Although I didn't see any difference between choices, selecting left and right was the best of the choices, in a foggy place and an injured person, simple choice is better. the biggest down point in story is I didn't get exactly when, where and how he died.