It's a shame the movie is dreadful.
My biggest gripe with the movie, is the audio. Holy shit. It is BAD. It makes the movie UNWATCHABLE. It's not even the dub quality, (Which may be great to awful, depending on what you think about English VA's) it's the mixing.
Watching this movie, sounds like someone is actively dubbing over EVERYTHING. Anything that is not speech is rendered to a mere whisper. It makes every single moment in the movie feel weightless and empty. Action scenes feel like they are being played on mute. When someone talks there is a palpable awkwardness in the air. It doesn't help that the CGI looks janky at times. The exaggerated Japanese lip sync to English voices makes it stand out even more. It feels like you're watching a child play with action figures, while a VA in their booth recites their lines.
Due to the bad mixing, there's a lot of dead air. Lots of scenes feel like they should have been cut shorter. Impacts and hits are missing their "oomph" factor. Halfway through the movie there's an art-style shift in the movie which is done pretty poorly. It's wiggly, with really obvious rotoscoping, and it doesn't look very good.
Oh, and they did my boy Robin wrong. What the hell is up with his hair?
The models and character design looks solid, but it all goes to waste. The animation quality varies quite a bit. The story is awful and pointless. There's nothing to care about.
All in all, you can definitely pass on this one. If you like Batman, or anime, it wont scratch either itch. 3/10. I'd give it a 2, but I like Joker's design and Catwoman's chest.
