He soon realizes the "demons" he is fighting are real, and he must battle a dark entity and terrifying creature designs that threaten his sanity and life. The Dark Within (Destiny Mission)
Under the guidance of his therapist, he attempts to confront childhood memories through sensory deprivation and chemical experimentation. The Dark Within
Marcus returns to his parents' secluded cabin in hopes of solving the mystery of their disappearance. He soon realizes the "demons" he is fighting