Now I am writing this review while I see the game 5 euros on Amazon: that price, it's a great buy
As much as it leaves it probably deserved not a new purchase, so the game experience, past mistakes and various problems, is very nice.
For little that clings to the atmosphere will be unforgettable chapters (including a stressful chapter in an asylum)
Game time is more than acceptable if we try to make the trophies, and trying several styles of play: namely, the fact of never knock person (game style "ghost"), which requires a much more reflexion. Allow 5-10 hours to play "normally" but 10 times that amount if you are looking for and replay all the treasures
Conclusion: it is certainly not a perfect game, but it is a have if you like the style infiltration