The game is pretty cool but lacks any sort of difficulty. I played though the entire game without dying even once (I not that good of a "gamer"). This isn't to say the fight engine is bad; to the contrary it is great for a RPG (and for 3rd person).
The character evolution was real cool, I ended up looking wicked in a very cool way. I took about 13hrs to complete but didn't do any extras so I imagine it could easily take twice that time. The game is what you make of it.