Black ops 2 is a terrible and I mean TERRIBLE game! Treyarch obviously didn't test this game or try to improve anything.
They tried harder on making the DLC's, guns, and emblems cooler (which they are not!) than try to make a decent multiplayer. All of that terrible future crap makes no sense! Apparently in 10 years from now we'll have invisibility cloaks, and helicopters that can rain missiles down and demolish a whole country, and big metal I dunno... crabs that can shoot turrets off it's back, stupidity itself.
No matter how terrible the multiplayer is, the campaign is very good. The story and combat is great. You make decisions throughout the games that affect the game and it's ending. I really liked that because it gave it a juicy ending and affected missions and stuff. I love how
The zombies is pretty bad. They improved maps and added guns and stuff but is pretty repetitive. It isn't very fun and after about round 10 when it turns into "Run from zombies!"
Black ops 2 is a bad game with a great campaign.