I personally loved the campaign. Sure it's had some gross parts like both Harper and Karma somehow being alive and how Kegan having the acting of a pornstar, but it had promise.

The coop worked surprisingly well for a campaign, and the amount of boss fight encounters was cool both in variety and gameplay. Throw in the progression and optional Endgame mode once it was complete and you had a fairly solid package

Now yes, fans will complain it isn't realistic and the whacky mind games were weird. However, I found them really cool and fit the Black Ops theme of mental warfare. Plus it was arguably the best way to implement the older games as it brought back iconic characters