 Being unable to seal it any other way, they enter the Box to close the breach from within.Once inside, they must battle the souls of those who have breached the Box in the past; a Nazi officer, a fallen Catholic priest from the Middle Ages, a depraved Roman Governor, and six ancient Sumerian priests (Ninlil and Ki, Inanna and Enlil as well as Nanna and Utu, who were the first to banish the Firstborn but ultimately fell victim to its corruption).Jericho is aided by the souls of those who ultimately resealed the breach each time it was broken.