You’ve learned to attack in a way that stymies the natural resistances common in outsiders.
Benefit(s): Your weapon attacks ignore a number of points of damage reduction equal to half your favored enemy (outsider [any one]) bonus. This feat allows you to ignore only damage reduction that is normally bypassed by chaotic-, evil-, good-, or lawful-aligned weapons. Against outsiders that match your favored enemy subtype, the amount of damage reduction and hardness you ignore is equal to your full favored class bonus.
Pathfinder Player Companion: Monster Hunter’s Handbook © 2017, Paizo Inc.; Authors: Eric Hindley, Mikko Kallio, Luis Loza, and Christopher Wasko.