Unforgiving is a better word for it. Once you understand the mechanics and can anticipate the BS the game likes to throw at you, it's not super ridiculously hard, just sort of hard still. It's more that the game is very happy to punish you for the slightest mistake.
Dark souls is known for its high difficulty, and i would assume that the sequel would be very difficult. IT IS THE HARDEST GAME AMONG MY MLG FRIENDS.
Yes, it is one of the hardest games on Xbox.
Yes