I am not an avid Dynasty Warrior fan, but it seems like the games appeal to me. I played DW:Gundam and unlocked all achievements, took about 80 hours, and I LOVED DW:Gundam 2, but I can't find it for less the $55 used. My brother bought Dynasty Warriors 6 Empires, $40 new, and decided he hated it. I gave it a little more effort and I love it too. I played for over 20 hours this weekend. Eventually, my brother played co-op. He must have decided I was having too much fun with his rejected game.
I gave it a 7.5. It would have been an 8, but there are a few too many little issues. The core of the game is solid.