Yeah that is basically it
I read it, and since I like norse mythology I couldn't help to notice a few things I believe is wrong, not that its a huge deal I think. But you might find it interesting or entertaining regardless
Hel were a Goddess and not a demon, I don't really think they believed in them, but rather in souls or something like that. The closest I think you can get to a demon, is what is know as a Mare, which would haunt people or animals by riding them and give them "bad" dreams, why the quotation marks will make more sense in a bit
. But is why "nightmare" in danish is called a "mareridt", and might even be where the "-mare" in nightmare comes from as well. But that is just me guessing.
However a Mare were usually a female dream creature, which would have sex/ride the person. But have changed a bit over time, exactly how they were suppose to be, as far as I understand.
However from an old scandinavian saga the story goes like this:
"A boy was very bothered by nightmares. He was then advised to close all the cracks and openings in his room where he slept. Only one hole should remain open, and he should close it while the Mare rode him. Next time, he got a nightmare, he plugged the hole, and when he woke, a naked girl were laying in the bed next to him. They got married and had many children. But once when they cleaned the room he unplugged the hole. Immediately the girl disappeared out of the hole and he never saw her again."
It is correct that people dying of old ages etc. would end up with Hel, but would not spend an eternity there, but would be free after Ragnarok.
Which might sound weird, because it is normally understood as the final battle in Norse mythology and the end of everything, but actually after Ragnarok, this is how the story goes:
.....The runes told them of a heaven that was above Asgard, of Gimli, that was untouched by Surtur's fire. Vili and Ve, Will and Holiness, ruled in it. Baldur and Hödur came from Hela's habitation, and the Gods sat on the peak together and held speech with each other, calling to mind the secrets and the happenings they had known before Ragnarök, the Twilight of the Gods.
Deep in a wood two of human kind were left; the fire of Surtur did not touch them; they slept, and when they wakened the world was green and beautiful again. These two fed on the dews of the morning; a woman and a man they were, Lif and Lifthrasir. They walked abroad in the world, and from them and from their children came the men and women who spread themselves over the earth.
Without going into all of it. Ragnarok, is sort of like how the Gods or most of them sacrifice themselves and their world, to rid the evil from what will come after. So compared to Jesus being resurrected, I think this is more what a sacrifice is suppose to be