Board Thread:Spoilers!/@comment-26443838-20160203031256/@comment-26443838-20160215230958

Eskaver wrote: We'll learn the rules of the Underworld, but I'm certain you can't kill the dead. Yeah, they did hint that the living can die. For the rules and consequences of the Underworld, I bet they can't be good at all. Especially if it involves life exchange for resurrection (just like we saw in Quiet Minds and Swan Song).