From publisher blurb:
Not every hero clings to the light and fears the dead. Some walk willingly into the darkness and claim the powers that rest there, becoming fonts of profaned magic with command over life and death. This collection of archetypes gives your PF2 characters more undead feat options, including:
DROWNED ONE. Your corpse sunk into the sea and became bloated with dark ocean magic. Now you steal the breath of the living and call down the tides on your enemies.
DULLAHAN. You were beheaded, but rather than die, you became a dullahan: a terrifying headless rider with individual control over their heads and bodies.
EXOSKELETON. You have reanimated a skeleton and shaped it into armor, which changes shape and sprouts limbs to enhance your defense and mobility.
FUNGAL CORPSE. Your corpse was infested with a colony of puppeteering fungus—but against all odds, you achieved symbiosis, becoming an avatar of spores and rot.
POSSESSED. A second soul has become a permanent passenger in your body. Both its experiences in life and its powers in death are yours to command, but the passenger exerts influence over you as well.
SOUL BOOK. You are cursed by an evil tome of necromancy and can wield its powerful forbidden magic. However, every page you turn brings you closer to your eventual demise.