Night Terror

Overview
Out in a lonely cabin, a man is going slowly mad, as imagined demons toy with him. During the day when the madness passes, he summons up the courage to end his terror, but each day he comes back empty handed. As the days pass, he grows more frightened and insane, until one night he ends his life(under review) to spare himself from the horrors. Each day he hunts for the lair. Each night they hunt for him.

He is searching for a vitally important piece of equipment/wild plant and cannot return without it.

Night Terror solutions
Finding the source of the insanity and stop it, releasing the hunter (and the PC, if he is afflicted) from his fear. Finishing whatever quest was keeping the hunter in the area. (Scavenging ruins for a certain item?)

Locations
Middle of nowhere. Forest or village ruins nearby.

Characters
James Henrikson, lone hunter.

Outcomes
James goes crazy and dies. You help him complete his task and both leave, able to slowly calm down. You convince him to abandon his task, and he goes home.