Not sure if I'm reading it wrong or something, but "We must needs alert the three nations" sounds like it should either be "We must alert the three nations" or "We need to alert the three nations".
https://i.imgur.com/5AygMhf.png
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Not sure if I'm reading it wrong or something, but "We must needs alert the three nations" sounds like it should either be "We must alert the three nations" or "We need to alert the three nations".
https://i.imgur.com/5AygMhf.png
It's correct grammar, just a bit archaic. It's just that "ye olde English" vibe that NPCs often do in this game. Both of your modern English versions you thought it should be would be correct interpretations of it.
In this case, "needs" is an adverb that means "unavoidably" or "absolutely necessarily". To say you "must needs dosomething" or you "needs must dosomething" means that doingsomething is so important that you don't just "must dosomething", you absolutely, unavoidably, without delay, "must dosomething."
You'll see it a lot throughout the game once you're looking for it.
Get ready to see "must needs" a lot as the game continues.
It's a weird quirk of (I assume) mainly US translators to put sentences into Shakespearean-esque 'Olde English' to add - I'm guessing - gravity and substance to character dialogue. Definitely not limited to this game.