Kiss of the Emperor
The planet is filled with people working at cross interests to each other who have jelled into distinct factions. Within each hive you will find local versions of these factions, but each faction will have connections that span the planet, and for some, beyond the planet. These factions can aid, or hinder those who have connections to them, especially if it furthers their goals or hinders another faction.
Planetary Administration The forces of the Governor and the imperial bureaucracy.
Noble Houses The ruling houses that control the hives.
Adeptus Ministorum The leaders of the Imperial Cult, they desire a great cleansing of the world.
Adeptus Mechanicus The tech lords who desire total control to reshape the world.
The Lost A secretive rebel organization looking to lead a mass exodus from the world.
The Black Veil The planets organized crime elements, no know central control, but they are everywhere.
The Rangers The remaining active Imperial Guard units tasked with pacifying the area outside the hives. Never enough troops or resources, no one knows the threats they deal with.
Adeptus Astra Telepathica A small but very powerful faction of psykers on the planet, they control almost all off world communication.
The Inquisition No official presence on the planet, a local version exists run by the Planetary Administration but rumors persist of actual inquisitors on the world.