From the review:
"God of War 3 clocks in on a normal setting at a shade over 9 hours, which for a hack and slash isn't too bad. The pace is well set and never lets up. There are some breaks in the limb snapping and head chopping, with a blend of puzzles and some flying sections. There's even a miniature nod to Ico when you have to help someone get from one place to another by fending off the evil monsters, but I can't say who."