Lusus Naturae

From the PDF:
Lusus Naturae is a bestiary for Lamentations of the Flame Princess (and other old-school games), featuring 103 face-melting monsters.

This book includes sadists, predators, and colossal entities that are only peripherally aware of the actions of two-meter-tall mammals on an inconsequential telluric planet. They include:

Cheerful and talkative Chapel Wights, who punish rudeness with scalpels

The Narcosan Princess, who conjures mountains made of rotting flesh

Davinia Marrow, mother of the Scryers, who curses her victims with awareness

The Abstruct, which builds its Citadel of Perpetuated Joys from the bodies of children