I kept my word and watched this movie last night. Story is exactly what you would expect going into it. I knew the story about Sonya and Lucian, from the other underworld movies. All of the events were no surprise to me, but it was nice to see them fleshed out. That actors all kept their character traits and looks from the other movies (Viktor, Lucian). They even show the first glimpse of the first underworld movie at the end to help tie it together (so yes, Kate is in this movie, although she's just doing the splits). Great way to get a precursor to the other movies, recommended if you're a fan of the films.
As for the sound, Lycans are bassy creatures. Great action sequences, should be a good Blu Ray pickup.
SheepStar