First i wanna say that its maybe a little to soon that they release this game, but after all its a very cool game and very completed. I've tried the Demo and im going to do a little assesment of it.

Pros:

I like the New Orleans style and its cool to try a zombie game that doesn't happen i dark. The graphics is going to be a 8/10, the graphics are good and nice but they could have upgraded the source engine a little more.
The game characters is very nicely done with there backgrounds and sounds. I think that its going to be a big hit and its very entertaining to play.

Cons:

They could upgrade the Source Engine a bit more, make it directx 11. The only thing they did was adding better anti-aliasing. But i dont have much to say about how bad it is, it is a nice game. And i am myself a big fan of Valve games.

Here is A pictures i took of it in-game.



This is defintly a game you should buy if your into FPS games