I still don't understand what this game even is.
My guess is:
Exploration: seems you can create tools and equipment to reach areas and places to find stuff
Third person shooting
Stealth (the Metal Gear element right there when those humanoids, from what appears to be another dimension or time, show up and hunt the player character)
The story, well, just like other games and movies the trailer just teases the story but doesn't give everything away. Since this game seems to have an intriguing premise I guess we can have quite a bit of urgency to know what it is all about. :)
Nintendo is selling their IPs to Microsoft and this is true because: