This movie is absolutely coo-coo bananas. Batman and his various adversaries/allies in feudal Japan is one thing, but it takes a gunpowder rocket straight into crazyland towards the climax. My jaw dropped. I had to pause the film.
The overall experience was certainly entertaining, to be sure. A few low or confusing points, but pretty well put together for what it is. And then the final battle goes and eclipses everything else. It's worth seeing, trust me. Just be sure to have plenty of sake on hand.