I had completely forgot about this game when I finally got my xbox one. I rented it, and after an hour of play went out and bought it. WIth all games, things will get repetitive. If that bothers you, then you might not like the content as much as I do. I won't touch details of the story since you can read all about it, but I enjoyed it. I think the game mechanics are amazing. Reminds me of the fighting in Sleeping dogs. With good timing, you're a monster, and one bad misstep and you can be done.
Online play is much like the regular game, so if you enjoyed the story you'll enjoy the arena and such. Shelf life is about 6 months depending on how fast they bring out new content hence the 9 rating. They would need to add a lot of content relatively cheap ( season pass may be worth it), but I can't judge the future. Please Rent this game!
Some of the reviews I have read lead me to belive that Ryse was just a hack and slash game. After putting some time in the game I found that you can absolutely button mash if you just want to get through the combat. That's not too sophisticated. HOWEVER, if you take the time to learn the combat mechanics, it has depth to it. And the reward system alows you to choose how your character will look, level up and carry out attacks. Not to mention this game is very stylistic and beautifully rendered.