The Dark Within -

The mission concludes with a boss fight against Gotra, Eir Spawn, a Hive Wizard. The Dark Within Us (Novel)

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) The Dark Within

Marcus returns to his parents' secluded cabin in hopes of solving the mystery of their disappearance. The mission concludes with a boss fight against