From publisher blurb:
The Hell's Vengeance Player's Guide gives players all the spoiler-free information, inspiration, and new rules they'll need to create characters prepared for delving into the adventure and intrigue of the Hell's Vengeance Adventure Path, Paizo's first Adventure Path designed for evil player characters.
Within, players of this campaign will find everything they need to create character backgrounds tied to personalities and events vital to Pathfinder Adventure Path's themes of quelling dissent and upholding the infernal laws of Cheliax as villainous agents of the Thrice-Damned House of Thrune, along with new campaign-specific traits to give evil adventurers the edge they'll need to take on the dangerous threats faced in the Hell's Vengeance Adventure Path. This player's guide also features a brief overview of rhe nation of Cheliax where the campaign takes place, various class options and advice for nefarious villains, as well as six pregenerated evil characters ready to take on a Hell's Vengeance campaign.
There's an uprising in Cheliax to put down! Swear your loyalty to the Infernal Majestrix and let the Hell's Vengeance Player's Guide start you down the path to damnation and power.