Once Batman climes down the staircase and through the basement, he would enter Millennium's laboratory. The laboratory is a wide, winding hallway without walls, but steel bars lining through the pathway. Batman would come across multiple desks and tables with several notes scattered about. Inside the cages are numerous operating tables with yet more notes scattered below them. The entire floor seemed to be covered with paper. Further in, they would notice corpses hanging from the air by the nooses around their necks. They have signs hanging from their necks detailing patient information. This isn't the end of it. There's much more to be seen. The smell of decay mixed with various different chemicals linger in the air and they only grow stronger further into the laboratory.