Campaign is short and dumb.
Tries to branch out form the usual linear storytelling cod has by having espionage /stealth features, side missions, code breaking and minor rpg elements. I'm here for a linear shoot em up story. Basically I look to COD for that playable Michael Bay movie experience. This deviated too far from that for it to be enjoyable. Though I will recognize I am likely the minority as I don't really care for any of the Black ops series.
The choosable endings is interesting, but both endings are lackluster and boring. One ending is noncommital and lacks finality, and the other has a monumental event but really doesn't show it at all.
I don't play multi-player, so no comment on that.