I didn’t even know that this was a thing but apparently after you beat the campaign you unlock access to the ‘endgame’ mode. It’s got PVE, tiered difficulty zones, extractable operators, etc. You deploy on Avalon with 30 other people and work together to complete objectives.
Seems like it just MWZ again but with less ‘zombies’ elements and more campaign themed stuff. I’m all here for it though, I loved MWZ.