The Sorority House was a pre-beta level that was cut from Manhunt 2. Danny had to free a young student who was being held by the Project (possibly an early version of Judy Sender or Danny's own daughter). The sorority house was entered through a roof where Danny performed the Window execution on a hunter. The level contained a few of the cut Environmental Executions.
According to some documents featured in the official website for Manhunt 2, the Project once used a male student as a volunteer. This male student died during the experiment, but those documents demonstrate that the Project once used a student as a test subject.