As Call of Duty: Black Ops 6 prepares for the launch of its second in-game season, a complete picture of the Treyarch title's overall legacy is starting to take shape. While so much post-launch attention for CoD releases is given to core multiplayer and other modes like Zombies, the campaign of any entry to the series is still a deeply important and influential aspect that holds a lot of sway in terms of how a title is received and looked back upon.