Hell's Foes is #9 in the Focus on Freeport series of free articles further detailing elements of the port city. Covers four prestiges classes designed to help combat diabolic foes: the devil slayer (a fighter-style class giving combat bonuses and immunities that help against devils) and a CR 11 sample, the diabolist (a wizard-style class granting full spell progression, improved spell penetration and miscellaneous abilities including the ability to discover the true names of fiends), the hellblade (a rogue-style class granting combat feats, uncanny dodge and sneak attack progression, and a minor immunity), and the inquisitor (a cleric-style class granting full spell progression, various spell-like abilities, and various persuasive talents). Each includes a brief stat block of a sample NPC (CRs 10 to 12).