User blog comment:Damac1214/Back in Black - Call of Duty: Black Ops III teased, reveal trailer coming April 26th/@comment-1187559-20150409194934/@comment-1916935-20150409204346

I wouldn't say most people went for every achievement. I only played through BOII's campaign once, and I play CoD quite frequently. But the issue with that system is that, iirc, there isn't an achievement for getting the good or band endings to the game, so that wouldn't work.