Didn't see some of them on other videos, like the Stargaze Puzzle which looks gorgeous (though I didn't understand the point).
Here it is: http://kotaku.com/nine-cool-things-i...ree-1796071356
It also highlights some of the tec, which allows you to fast foward time in order to make use of the guard's schedule.
Thanks for the link!
Stargazing side quest is much welcomed very cool. Fast forward time? Not sure how I feel about being able to do it anytime anywhere but I'm certainly happy that you don't have to play at night if you don't want to (though the night scene looks quite nice) and this could be pretty neat for stealth considerations.