It was decent. I liked seeing the build-up, the reactions to seeing zombies for the first time and not really knowing wtf to do. I still think military dudes with modern weaponry who know they have to shoot zombies in the head would handle a reasonable amount of zombies very easily. A gigantic swarm situation obviously isn't the same thing, but I digress.
Now everything happened, and it's just another "let's survive the zombie apocalypse" story, which is pretty played out for me at this point. That being said, I'll still watch it, and the main series, and Z Nation because I started them so I gotta see them through!