The best part about Rise of the Kasai is it's a lot like the original Mark of Kri; and the worst part about it is it's a lot like the original Mark of Kri. In many ways, it feels like a direct continuation of the first game - which isn't bad per se, but after 3 years, it's not unreasonable to hope they might've done more with the sequel. The graphics, the controls, the camera, the gameplay - and the issues with all of the above - it's all pretty much the same thing as MoK.
Part of the problem is that the most intriguing / promising element of RoK - two-player coop - was stripped out of the game design at some point. So you're left with a semi-competent AI buddy instead, which isn't nearly as satisfying. The coop mode of the last two Tenchu games was kinda half-baked, but at least it was there.