Remnant: From the Ashes is a third-person action game along the lines of Dark Souls. Instead of a slew of melee weapons, the game focuses on gunplay. Each game is also randomized so you encounter different bosses and come across different weapons and armor. In order to experience it all, you have to help out other gamers through the online co-op mode.
In a brand new campaign mode, players will discover the origins of the Dreamer Program and its connection to the Root. Following the downfall of the Dreamer, the streets have grown quieter, and more humans are braving the city. Hope has been rekindled, but Earth is not rid of the Root just yet. As players seek out the location of the remaining Root, they will meet unexpected allies, traverse unfamiliar zones and dimensions and overcome new threats to put an end to this evil force, once and for all. This thrilling new adventure will span across the rugged wilderness of Earth and beyond, where players will experience new quests to complete, new gear to acquire, along with new enemies and bosses to conquer.
Subject 2923 sounds like the DLC many Remnant: From the Ashes players have been asking for for years now. It should answer all remaining questions when it launches in a few months.