Search on YouTube, there's lots of gameplay videos. It looks like generic hack-n-slash par for the course, but it's still something entertaining to do, with it's own story that fits into the continuity somewhere. Of course, we're not allowed to have nice things, so the game was never localized outside of Japan.
Still, if I had a region-free PS2, I'd import it. I mean, you get to play as fucking Papillon if you want; that's all the reason you should NEED to play it.