Horror Adventures
Alchemist gets the blood alchemist and mad scientist archetypes.
Barbarian gets the lesser cult totem, cult totem, greater cult totem, lesser daemon totem, daemon totem, greater daemon totem, and flight response rage powers, and the dreadnought, fearsome defender, and mooncursed archetypes.
Cleric gets the elder mythos cultist archetype, and they finally reprinted void and three subdomains in a Pathfinder RPG book instead of just in a Campaign Setting book.
Druid gets the death druid, devolutionist, and life channeler archetypes.
Inquisitor gets the hexenhammer and living grimoire archetypes.
Investigator gets the cult hunter, gravedigger, and profiler archetypes.
Kineticist gets the dark elementalist and the psychokineticist archetypes, as well as the elemental whispers and greater elemental whispers wild talents.
Medium gets six new legendary evil spirits they can access by doing something specific and swearing an oath you won't do something, varies for each of them. Butcher instead of Champion, Deceiver instead of Trickster, Heretic instead of Hierophant, Lich instead of Archmage, Terminator instead of Guardian, Warmonger instead of Marshal.
Mesmerist gets the dreamstalker, gaslighter, and hate-monger archetypes.
Occultist gets the haunt collector and talisman crafter archetypes.
Paladin gets the martyr, soul sentinel, and tortured crusader archetypes.
Slayer gets the bloody jake, family hunter, and witch killer archetypes.
Spiritualist gets the exciter and necrologist archetypes.
Vigilante gets the experimenter, hangman, and serial killer archetypes.
Witch gets the conspiracies, decadence, entropy, nightmares, revenge, and space patrons, as well as the gingerbread witch and tatterdemalion archetypes.
Wizard gets the elder mythos scholar, hallowed necromancer, and undead master archetypes.