Sets in the Laboratory — a sterile maze of humming fluorescents and antiseptic corridors where every footstep betrays you. The clamorous disinfection passage screams alarms and exposes movement; the Medical Room conceals vital healing tools. It adds the Unidentified, who slips through secret passages and mutates over time, and the regenerating, ensnaring Strangler. Mutation and shifting threats force razor‑edge decisions and clever movement to outsmart the horror.