A "singleplayer campaign" refers to a specific type of video game mode where a player can experience and progress through a story or series of missions alone, without interacting or competing with other players online. Full definition
With the new Exo powers in play this is one of the stronger singleplayer campaigns in terms of pure gameplay the series has had since Black Ops and Modern Warfare, but if you've become fatigued with the series over the years it won't be worth coming back just yet for the solo experience. (wolfsgamingblog.com)
10 - 15 hour singleplayer campaign with plenty of side - quests and a multiplayer mode to boot. (wolfsgamingblog.com)
Not only are there more multiplayer maps at launch but there is also a significant singleplayer campaign as well as air / space battles. (playstationenthusiast.com)