The Officio Assassinorum is a highly secretive organisation which trains terrifying bio-modified killers for assassination missions sanctioned by the High Lords of terra. The diverse Temples of the Officio specialise in the different arts of murder from the bittr kiss of poison to berserk slaughter. The Inquisition has close ties with the Officio Assassinorum and their operatives often have cause to work together.

Vindicare Assassins practice callous, unfeeling destruction that eliminates the target with contemptuous ease. They aim to bring inglorious death to the enemies of the Emperor with a sniper's bullet, and have elevated the skills of the marksman to an art form.

An Officio Assassinorum Operative may be added to your Daemonhunters or Witch Hunters army as an Elite choice as long as your army includes an Inquisitor.