Please register for Total War Access to use the forums. If you're an existing user, your forum details will be merged with Total War Access if you register with the same email or username. For more information please read our FAQ’s here.
I am playing as the "Oracles of Tzeentch" faction and was awarded the "Celestial City Secured" achievement after occupying it with Kairos Fateweaver. The description of the achievement says "Playing as Cathay, occupy Wei-Jin.". So either the achievement is bugged or Tzeentch has tricked the software into awarding me the achievement nontheless.