Dark Demon by A.C. Wilds

Resurrected secrets and blood torn lands.

Anima and Torque have found Nox, but now they face another challenge. Torque’s brother Scur won’t let what happened go. He’s bent on revenge, and the only thing standing in the way is Anima and Torque.
With the return to the Dark Palace, Anima and Torque quickly realize there is more to this game than they were promised. Rahna has been doing some recruiting of her own, and her power is too great for the Dark Demons alone.
They must find Caedis, Death himself. The ruler of the Deathlands and the demons who no one wants. But when Anima arrives, there is more to the death demon than she thought. A lot more.
Will Anima be able to navigate this alternative world and bring everyone together, or will she face Rahna on her own?