Just saw a gameplay video for this game on youtube after someone mentioned it on a steamchat... wow.. looks super fun!
Only wish it weren't an exclusive title for the vita system :(... there aren't that many titles out there that interest me enough to check it out.
It's got a modern "Everybody was Kung Fu Fighting!" feel to it :) I could imagine it getting quite repetitive after a while, but seeing as it's for a mobile system, it could be a very fun diversion while you're on the train or bus. Music is pretty catchy too.