Just couple hours into the game, it is very similar to the game Ninty Nine Nights so please allow me to make a direct comparison.
Asian Lanuage support (not a pro for a lot of you but its just for me)
Up to 4 players max online co-op play (Think of it as N.N.N play with 3 of your friends) There are online match lobby but I only played for 30min online so I will not comment more untill more time spent online.
Equipments added into the game, which you can combine and sell trade with other players.
Somewhat smaller scale battle compare to N.N.N I think a lot of it has been cut because it needs to support multi-play
Narrow space compare to N.N.N
Story not very good, I think shallow is the best word to describe it
Graphic wise is not superior comparing both games. N.N.N color is more richer and KUF is brighter. I put it into cons simply because its a newer game and better graphics is expected.
Combo animations are very similar to N.N.N if not even more simple.
I realized that the negative aspect does seems overweight then positive, but if you are a sucker for multi-player and mindless hack-and-slash fun then I strongly recommend. Its a good relax piece to have and play on and off with your Mass Effect game, because saving galaxy from the Reapers is hard work! (Excuse my not so funny joke)