Sadly this game is let done by its poor AI and coding, sometimes the guards can be looking in your direction and be very close and they can't see you!
While it is an open world it gets repetitive, and I understand the logic behind the constant night setting but it gets a bit tiresome.
It gets really annoying when characters constantly repeat the same sayings through out the game.
It gets frustrating when you can climb some high environments and then not be allowed to climb something that should be easier to climb.
In summary, a good idea and story but let down by its implementation.