The fourth and final basement floor was separated into two halls. The halls were connected through a huge hallway. From an elevated position, one could clearly see the ancient gateway that was supposed to separate the two hallways. However, the ancient black gate was not closed. Lesser Demons kept pouring out of it, aiding the Lesser Demons in the first hall as Liam and the Natives hacked and slashed their way through the Lesser Demons that easily numbered more than a thousand.
The first hall was completely manmade and constructed to look similar to an arena. It was an underground arena that was the size of the Colosseum. It was circular-shaped with a large open space in the center. The walls and ceiling were made out of the same basalt that could be found everywhere in the underground tower. There were even a few rows of seating arrangements that doubled up as walls. The walls were further built into tiers, rising up around the perimeter of the arena.