The Blood Demon is a big bad who was slain in battle but lives on as a malevolent spirit. In an attempt to return and rule over the three worlds of the game (physical, celestial and ghostdom), the Blood Demon has ordered his troops to conquer the vital Hexad Region. Fortunately, the good guys got wise to his plan and are marshaling their own armies to forestall his return.
Blood Demon's Assault includes new instances and systems for players to master, although IGG has even more planned than the company is telling. The update has been in testing for months now and should prove to be a nice belated Christmas gift for the community.