It was a very well acted movie. Tom Hardy and James Gandolfini were really great. I especially loved how Hardy conveyed the emotions of his character through body language and facial subtlety. You could feel some of the history that the character has been through from that. Some scenes, especially the finale had great tension and execution.
The pacing however was sometimes really slow though. And the story failed to setup its world like the movie wanted to. There's history, there's relationships, but the execution of it wasn't that good for my taste. That isn't to say it was horrible, it was fine to a certain degree but in a movie like this, you want to really get invested in the character's world and that just didn't happen to me. And due to that, some scenes/characters just ended up feeling useless, like there wasn't any real purpose to them in the movie.
Still, was a decent watch.