hm in my Country isreal this game is not selled and problay will never be selled XD.
so to buy online is a bit hard for me bcz i have to ask my Partnes for ther credit card.
so i wented to know how much time is this game from the begining antil the end?
Alright, great, you have it ;D Enjoy!
But I'm gonna answer your question in any case.
The gameplay usually lasts 6-8 hours, less if you are faster, and longer if you are slower of course, but most often you can count on 6-8 hours.
/Breaker
I'll hope that they make second Episode longer.
It would include some sort of tunnels or rooms that doesn't belong into story in anyway.
Just fun to see what is in there.
At least I think that it makes gamelife longer if you don't go some places first time, then there's good reason to start the game again.
And what makes it even longer would be some sort of thing that enemies change place always when you press "New Game" button.