The story of Todesangst 2: der echte Feind (T2DEF) will further develop the internal Black Mesa conspiracy and the human/Xen biological engineering theme. Dr. Newell was the genius mind behind the experimentation and development of the Xenanthromorph program, but unfortunately as in any complex secret collusion, the problem is much worse that it initially seems. The true power behind the clandestine research is a multi-national anarchistic group called Schwarzgeist. During the construction of the Black Mesa compound they began to secretly infiltrate the organization. By the time of the first successful retrieval of biologic matter from Xen, Schwarzgeist personnel were in key scientific positions. They managed to keep their identity secret until an inadvertent exposure during the resonance cascade disaster and ensuing containment revealed their existence. Although top Black Mesa management and the NSA are now aware of their presence, their true objectives remain a mystery. Intelligence gathering efforts have been hampered by Schwarzgeist's efficient and airtight organization. In fact, Dr. Newell was not a known member of the group until his attempt on Gordon Freeman's life. His human/Xen DNA decoding project and "molecular transmutator" equipment were skillfully disguised as pharmaceutical research. As the story of T2DEF unfolds, Gordon will soon discover just how deep their influence and control of Black Mesa personnel has gone . . . .