AoC just keeps getting darker and darker the more you explore.

In AoC The Dafari are : "...followers of Yog and take part in vile ceremonies involving human sacrifice and cannibalism in his name."

They further "are cannibal warriors with sharp, filed down teeth. They are fierce, aggressive hunters and have started moving upwards through the Black Kingdoms towards the heart of Stygia"

It seems they are taking over Hyboria and it will be your job to clean them out.

You can read all about them at the official site