Here is an overview of the downloadable content, via THQ Nordic:
On a quest from Vulgrim, Fury must travel into the Serpent Holes to remove an ancient threat that resides there. The Serpent Holes are riddled with new puzzles and enemies eager to test Fury’s abilities. If Fury prevails, she will unlock all new weapon from the Hollows, as well as the biggest prize of them all: The Abyssal Armor.
Watch the launch trailer below. View a set of screenshots at the gallery.