I have passed Nioh 1, and i can rate it an 8.5 out of 10, with Having the most replay value out of any PS4 game so far.
After Playing Nioh 2, the difficulty is perfect for gamers who want a challenge, just like the first, and the new weapons along with the old are balanced evenly throughout the fights.
The core mechanics are the same with a few additions which have also made it funner to play.
This game is not for NOOB's, SUPERHERO's, or RUSHER's.
It seems with the new difficulty, the challenge is more rewarding and more addicting, which may earn this game a solid 9/10, the new game to play today.
I would also like to add that the new cinematics, music score, graphics, and story might make this game of the year and unlike the other reviewers comments, the gameplay is purposely made the way it is for the experience the game creators intended it to be like.
You aren't the one creating the game, you're the one playing it.