Tried the demo, didn't like like it. Seems like another Musou clone.
That said, every game is fun in co-op, you can take the worse game and play it in co op and it's fun.
I am not a big fan of the hack and slash games even though I am a fan of action games (God of War, Ninja Gaiden, Devil May Cry) so I am biased against this game and any .... Warriors game.
Thanks to Blacksaber for the sig!