I have played it through, it was a good ride. Visually superb as always, puzzles were challenging enough, some even got me stuck which is what I really dig about adventure games. Voice acting really got me. A pleasure it was.
The only downside is that they got carried away with the "lost relatives" story line, it went out rather thin and non-important in my opinion. Like in Whispered World, there was no twist to it. I kind of wish it was a traditional bad guy/good guy tale.