For the first time since the series began fifteen years ago, the new Call Of Duty does not have a story-driven single-player campaign. And yet, the good people at Treyach who made Call Of Duty: Black Ops 4 (PlayStation 4, Xbox One, PC) have repeatedly said that it still has something for people who prefer to play solo. As one of those people, I decided to put their assertion to the test, and found that while you can play this on your own, it may not be for very long.