During the first hour of the stream our trio make their way through multiple side quests before completing sole main campaign quest available in the beta. (shortpause.com)
There is also a tremendous amount to see and do, with multiple side quests alongside the campaign, and that's before taking into account the DLC bundled in with the title. (thevitalounge.net)
There are also other modes such as Expedition Mode which features multiple side quests, as well as a multiplayer mode within Expedition Mode. (cogconnected.com)