In this quest you have to stash 4 Cultist knives at the specified locations on Shoreline and Woods.
The knives can be obtained by killing Cultists or purchasing them on the flea market.
Shoreline[ ]
The first stashing spot is located in the church at the swamp village.
The second stashing spot is located in the pig room (East wing room 321) on the third floor of the health resort. The room is easily identified by candles and numerous markings on the door.
Woods[ ]
The first stashing spot is located at the dilapidated village in the north. The circle itself is north of the church in the backyard of a house.
The second stashing spot is located in the woods west of the sawmill near the checkpoint. This spot can easily be located when you go to the checkpoint, stay at the barrier and line your view up with a big stone south of it. See pictures below.
