I will start off by saying I never was able to complete the game. Not because of difficulty, but because of bugs. There comes a point where you must kill a bat in an old guy's room and to do so you need to join a Guild and learn a spell. Problem is when I went to learn the spell I got the whole spiel about 'can I trust you?' and the camera was horribly placed, the NPC was no where to be found. I kept coming back but he never showed up again. Before anyone replys that there are steps to take first, those were done, I was a member of a Guild. Anyway this bug made it impossible to enter the Inner City. I hear it is a very rare one.
The gameplay mechanics are pretty sound. It is a hack and slasher, but you have to be creative in your approach to enemies, at least on non-easy modes. You have a large array of weapons available but they fit in four classes; Sword, Hammer, Moonblade, and Spear. Each can be leveled up in different ways, including blocks and counters. Apart from weapons you have mystic abilities that allow you to enter a non-physical existence and walk around and see hidden gateways and items; you also gain other abilities along the way that makes this better and some that are not so great like looking through the eyes of a raven. Path of the Raven however is one of the best spells, despite that map being quite fluid and precise, PotR shows you the path to your objective when used. Physically you can run, roll, swim, but not jump which is disappointing.
Story, at least as far as I got, was pretty good. I wouldn't rate it up there with Halo or Gears of War, but it was intelligent and had some nice twists along the way from what I read past where I was.
Graphics, stunning. Simply stunning. The city-scape is amazing. Sure you will see repeat textures and buildings but the vastness of it all is on the scale of Assassin's Creed, just without the ability to jump freely.
I would say this game is best Rented. It is fun, Xbox original fun, not 360.