Take a look at the 'Project Diarchy' Season 4 Gameplay Trailer for The Outlast Trials, an action online co-op horror game developed by Red Barrels. The new season for The Outlast Trials is packed with new content for fans to enjoy, including New Prime Assets with Otto and Arora Kress, a new environment with The Shopping Mall, a new limited-time event with the Kress Twins, and more.