This Is The Worst Mission In Call Of Duty: Black Ops - Cold War This Is The Worst Mission In Call Of Duty: Black Ops - Cold War Activision By Elise Nelson/Dec. 11, 2020 9:00 am EDT Call of Duty: Black Ops – Cold War, developed by Treyarch and published by Activision, dives into the early 1980s to explore the Cold War. CIA operative Russell Adler is on the hunt for a villainous Soviet spy named Perseus, whose goal is to give power to the Soviet Union. The player takes on the role of a custom character, codenamed Bell, to aid Adler in his mission.