Campaign was the best campaign the franchise had in a while. The branching paths you can take and plot twist were quite neat to experience, along with the dramatic ending(s).

Zombies was interesting. I only ever played the first map, but to me it seemed like they were trying to milk the Aether storyline for everything they had. It's unfortunate they couldn't really do much more with the Chaos storyline, as I would have been interested in seeing where they would go with that.