Finished the game a couple of days ago, and it was an absolutely amazing experience overall.
I know Uncharted 3 is hitting today, but it's gonna have to work hard to rob AC of its GotY crown at the moment.
I am generally much more pleased with this game than I was with Asylum. Asylum was kinda held back by bland stage design and a monotonous look, but City fixes that with a sprawling city to toy around in and some genuinely interesting indoor environments as well.
Sidemissions are surprisingly meaty, and even the Riddler is a much more menacing presence than before.
The story is fantastic too and the ending had the proper emotional impact, more than I'd ever expect from a Batman game, even though I thought the final boss fight was kinda outta nowhere.
I'm amazed at how well they managed to create an atmospheric, gloomy movie-like experience whilst still maintaining actual proper "gamey" elements, that is, actually letting you PLAY THE GAME instead of holding you by the hand and leading you down corridors, which is what most movie-like games seem to do.
The Catwoman stuff was decent, but you honestly don't miss much without it, although her final boss battle is one of the (few) most challenging moments in the game.
If November wasn't so ridiculously crowded with games, I'd gladly dive in again to do more of the side stuff (I'm only at a total of 48% or something), but alas.
Still, excellent, excellent game.