For anyone wondering, there are four new missions.
Strange Tales of the Plague: This mission involves finding and delivering diseased corpses in Armadillo while avoiding zombies and cultists.
Strange Tales of Modern Science: In this mission, players must attack Braithwaite Manor, which is defended by a large number of robots.
Strange Tales of the Bayou: This mission takes place in Lagras, where players have to fight through waves of NPCs and gators to capture a target.
Strange Tales of the Wilderness: This mission requires players to track down a target in a large area of Tall Trees without any weapons or consumables.
I got the first one done last night.