Um yeah, I just played through the game, beat it in about 3 and a half hours, though I wasted some time trying to find secrets. One of my complaints was how easy all of the puzzles were, I don't think I was ever stumped more than 2 or 3 minutes by any puzzle, and I didn't alt tab a single time. The game is 100% beautiful, and I was just totally absorbed by the story... until it just ended. Nothing revealed or explained. Left a sour taste for sure.
It's a great game experience, but yeah, I would now suggest waiting for a sale before recommending it. Hell, I was excited to have my GF play through it as soon as I get home, but after finishing it, I don't think I will even mention it. It was just a massive awesome buildup with no payoff in the end.