It's morbid, dark, and cynical. Nearly anything you do will be downplayed and rendered meaningless, again and again and again. Everyone is despicable. You murder kids, while feigning ignornace. Whether that's a pro or a con is up to you, but it's not really my thing.
This game has a slow start, but gets better with each chapter. It becomes interesting once you start chasing your demons and really gets going once you enter the final chapter. Too bad the end comes out of nowhere and just pulls the plug.
The puzzles and problem solving is for the most part straightforward, if you're a bit flexible in how you associate things. The only nonsensical problem - to me - was the colorblind pizza thing. The clue here is to forget the whole colorblindness nonsense and see it as a color matching puzzle.