A special detailed area built by Spiral HQ "just outside of Haven" featuring memorials to fallen knights.
It is always raining here.
A Monstrous Codex can be found just before a fight with Trojans.
Notes
Goal: Deliver the sword and get to the elevator.
Players must endure an infinite stream of Lost Souls throughout the floor. When the sword (something the player does not visibly carry, similar to the salt in Prestige Mission: A Pinch of Salt) is placed on top of the memorial, a fight with greavers and trojans will begin.