Microsoft has announced details for the upcoming Rise of the Tomb Raider DLC that will arrive on Xbox in late December and early 2016.

The biggest addition to the game can be seen in the trailer below which features a quick look at the new content pack, Baba Yaga.

“Baba Yaga expands the story of the main campaign with Lara facing deadly new adversaries, exploring a new puzzle filled tomb, and solving a decades old mystery,” Microsoft said in the video’s description, “All culminating in a showdown with an ancient and mythic evil.” Microsoft also said the new expansion will feature “hours of new gameplay.”

In addition to Baba Yaga, two new game modes will be available to players, a new Endurance mode which will be available December 29th, and a mode entitled “Cold Darkness Awakened” which looks to be Tomb Raiders take on a Zombie survival mode. Also available will be new card packs, outfits, and weapon skins. Official descriptions for all three modes can be seen below.

Endurance Mode – Available December 29th

Alone and in the wild, Lara must scrounge, scavenge, craft and survive the harsh elements by day, as well as lethal threats from enemies, both man and beast, by night. This is her ultimate woman-versus-wild test to push the limits of how long she can survive on her own in sprawling, unforgiving landscapes. 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. Includes a new outfit and weapon.

Baba Yaga: The Temple of the Witch – Available in early 2016

Deep in the wilds of Siberia, there is a forbidden forest that no man will enter, where a Soviet expedition vanished without a trace. Lara enters the Wicked Vale in search of a missing man, but what she finds is a nightmare that she cannot explain. Is the witch, Baba Yaga, truly haunting the forbidden forest? Or is there more to the legend? Featuring hours of new gameplay, this adventure expands the story of the main campaign with Lara facing deadly new adversaries, exploring a new puzzle-filled tomb, and solving a decades old mystery, all culminating in a showdown with an ancient and mythic evil. Includes a new outfit, and a new bow.

Cold Darkness Awakened – Available in 2016

Decommissioned during the Cold War, a dormant weapons research base has been breached, unleashing a mysterious affliction into the Siberian wilds that transforms beasts and men into blood-thirsty, mindless killers. Lara must overcome increasingly dangerous waves of these infected predators while scrounging their equipment and crafting additional gear on the fly, in kill or be killed survival-combat. Fight for your life against new enemies and complete new challenges, while discovering a way to stop or perhaps even reverse this impending catastrophe. Includes a new outfit and weapon.

Rise of the Tomb Raider was released on November 10th, 2015 exclusively for the Xbox One this holiday season. Gamespresso gave it a 9/10 and the reviewing editor Mike Nitroy said, “Rise of the Tomb Raider is arguably one of the best action-adventure games of 2015.” The full review can be found here.