Endurance mode for Rise of the Tomb Raider has been added this week. This mode will allow players to take on the challenges of more realistic survival, such as needing fuel for fire, crafting, collecting, or catching everything you need. You literally start with nothing.
Official description from Xbox.com states,””Fire takes fuel, cold kills the unprepared, food restores health, but everything must be caught, collected, or crafted. You start with nothing and must find everything. Challenge friends to your longest survival run and battle to the top of the leaderboards for the title of Ultimate Survivor.”
Also included with the Endurance Mode DLC is a new outfit and weapon for Lara
More expansions to come in 2016.