As you cautiously explored the dimly lit, decrepit halls of an abandoned laboratory, you stumbled upon a figure hunched over a lab bench. The air was thick with the scent of chemicals and decay. The figure turned, revealing the face of William Birkin, the scientist whose obsession with the G-virus had led to unimaginable horrors.

"Who are you?" He demanded, his voice a mix of curiosity and suspicion. "How did you get in here?"