Aye, your wording an eloquence is not the greatest, though you're not horrible like others that I know of. However, your view on Norse Mythology is somewhat... narrowed. Yes, you mention quite a bit, but even some facts regarding the Ragnarok War were left out. And to be a little more specific, the outcome was the inevitable death of all the Gods, Goddesses, and Higher-Beings alike. Though, like you said, a few were spared, only a handful though. The one's who were pacifistic regarding the war and (in another version) the ones who were victorious in the Ragnarok War.
I think the first is true due to the true meaning of Ragnarok.
In any case, you also forgot the warriors housed in Valhalla join the fray, as well as the valkyries.
Oh, you also forgot to mention Asgard (Heaven), Midgard (Earth), and Utgard (Hell). Which are stationed accordingly on the world tree, Yggdrasil.
You also left out the normal Norse heroes as well as the legendary weapons like the Gae Bolgg and the universal 'Blade of Flames', the Flamberge.
Hm... that's all I'll say for the moment, but nice summary in any case.