It was engrained into my brain by my professor German literature that most of those sagas end in death. Sure, Charlemaigne does not, but that's a later kind. The really really early ones are mere heroes fighting monsters and such like the Niebelungenlied. All ends in death, not because of the violence, because that is a good thing in Germanic culture, but because life ends in death. That is all. The wheel of fortune sends you to a high the one moment and then the gods decide it is your time to die. Enjoy it when it lasts and then prepare for death. Violence has nothing to do with the hero's death or not, it is just his lot. He may well have his head cleft and still survive or something. If it is his lot to do so. It is only later you get real heroes who can only win because God is with them. or something and you also get the idea that evil must be eradicated by the knight who fights with God behind him. In Germanic literature, as far as it has been explained to me, you do not have evil that has to be eradicated, but evil that is there, and will stay there, forever, to be fought and re-fought, and re-fought until eternity. It cannot be conquered because there are essentially only gods that make things happen. As such, you are fighting the gods, and that is a battle that cannot be won.
Fer can become so much part of the story that it can become a character. A personalisation so to say.