It's so good it is hard to put it into words as I am typing this. It actually seems like it was designed for the infected, not just for the survivors, and the graphical design is just BEAUTIFUL. Each map does what it does so well that it is hard not to just sit there and stare at the map instead of fighting zombies. And the finale is pretty good too, with an expansive building full of stuff and different places to hide out. My only complaint, sadly a big complaint (that's why its 4/5 instead of 5/5), is that there is no versus support, even though it would be so good with versus. Charger spots, hunter spots, smoker spots, jockey spots, tank spots. Also, if you're looking for a campaign with really good witches, this is not the one for you, but it doesn't negatively impact the campaign IMO.
9/10, really good, I suggest getting it as soon as possible.
Blown away