Contains SPOILERS!!!
Let me say first that the Arkham story conclusion (before Knightfall ending) was magnificent. Having the Batman move on by letting go of his past and hang up the cape and cowl. Really, that was the way the Dark Knight should leave his crime-fighting life.
Now the voice acting, more specifically, Troy Baker as the Arkham Knight/Jason Todd (ah, what an expected surprise...) definitely showed the anger and vengeance he felt towards Batman/Bruce Wayne after the Joker tortured and then supposedly killed Jason, which turned out to be a ruse (so I understood).
Gotham City looks alive and HUGE! I did, however, felt a bit disappointed that Arkham City and Arkham Island weren't available to explore. The neon lighting, the wide, rioting streets to ram through, and the high... high buildings gleaming with beauty.
And lastly, Rocksteady's centerpiece: The Batmobile. I've heard from some reviewers, and from what I understand the Batmobile is being overused. I would agree, especially with the Battle mode where we must destroy a mass amount of unmanned drones, tanks and helicopters. But I've found it enjoyable. I love shooting things (in video games, of course). The pursuit mode, on the other hand, was fan-fucking tastic. I thrilled myself while chasing militia trucks, shooting them, side swiping them to the buildings and walls.
In short, I'm really loving this game, and I would suggestion any one to buy and give it a shot.