The huge city and the free roam style is awesome offering you many places to visit and many alternatives to follow. The almost realistic day cyrcle is something new to those games and especially the night is so creepy cause to wonder cause of the super zombies.
The campaign was good but a little short to my view. But you have a lot of sidequests to do which are so worth, cause of some unique rewards you get from many of them.
There are pretty enough weapons in the armory but i really liked that they are getting better and better the more you play.
The skill tree is huge with many new moves and other stuff changing the gameplay as you keep learning them.
I havent tried the Be the zombie DLC as a hunter but i enjoyed it as a human.
I would recommend this game to anyone who likes zombie games and want to play with other teammates too with the coop feature which i almost used by 99% of my playthrough.