War in Middle-earth - The Long Winter 

Helm Fatclapper would be quite a fitting name for him 😁

Freca was a dunlending it was warranted

Oh man, this is a tough one. I would say Arnor probably wouldn't have fallen, but the rest of Middle-earth wouldn't look so pretty. The Anduin was a massive buffer against the evils of the east and south so losing it would render all of the western lands extremely vulnerable. I wouldn't be surprised if everything east of the Misty Mountains except for Lothlorien ended up falling into the hands of Sauron or his allies. The Northmen would probably be completely destroyed or enslaved so Rohan never would've happened. I think Arnor would've survived because at the time of the Kin-strife, Angmar had just been nearly destroyed by an attack from the Elves. An influx of Gondorians into Arnor likely would've given them the strength to finish them off, and reverse the declining fortunes of their kingdom. Would they be as strong as Gondor? Probably not. Gondor has a better climate and far more fertile land than Arnor so they could always sustain a larger population. And Aragorn would've been born into the crown, provided he ended up still existing with such massive changes to the timeline.

same here