Hands down, the greatest game I've ever played. The only problem that I have with it is that I am wishy-washy with what kind of build I want to play as (Samurai, Ninja, Onmyo, Swordsman, Kabukimono, Sniper, Archer, etc). All the builds are so much fun, it makes it difficult to play through as one character type.
But that is not the developer's fault. I like that it does start easy, and then each play through progressively gets harder and harder. Even with the player level cap at 750, your enemies will continue to get stronger. You will be required to think on your toes as you continue to the different levels of play through.
All in all, worth every penny, and I will be playing this and Nioh 2 for years to come.