UPDATE: I win! See the third post.

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...and I'm about halfway there (all blue/blue is mine).

I have two issues to deal with, neither of them enemy forces.

(1) I have 39 settlements, so that means 39 places where ravensworn/hungry maw can pop up. Since I'm basically playing a lot of whack-a-mole with them, sometimes I have to go nuclear on them (abandon the settlement, then rebuild it). Right now they're in four different provinces, so my poor high priest and high judge are swamped with work.

(2) If I want reasonable legitimacy, I'm limited to three provinces (remember, each province is -1 legitimacy growth).  I technically have four provinces at the moment, but one is a maskling province I just conquered. The rest are unaffiliated settlements, so they desperately depend on the judge's +30 authority (meaning they have 34 authority each instead of 4 authority). Obviously, sticking with a high-stat high judge is vital.

Hopefully there'll be no major issues.

It's been nearly a month since the last update, so let's have another!

As you can see, I'm most of the way there.  King Nas the Magnificent is still in charge at the age of 76; sdadly, he likely will not lvie long enough to see the last bit of the map (thirteen visible provinces) get conquered.

Isatthe (white/orange) was dumb enough to try and demand one of my settlements (roughly the area between his lower spot and the ocean); I laughed at him, built about 30 civilian units, and prepared for a war. And then the war ended early when I snuck in, grabbed an undefended settlement, and used that to peace out.

But he had a target on his face thanks to his absurd demand. When he went to war with Wittoall (red/white), I lined up troops on the border, declared war, and invaded five of his territories. I only took two before battles became a mess, but hey, two new territories. I just had a third war with him (it ended five in-game seconds before the screenshot), and took two more territories (and took a third in the peace treaty. He's down to two widely separated territories, so he's no longer a threat.

Meanwhile, my battle with the Bloodcrusher Clan (red/yellow, on-screen) had an absolutely  humiliating win. Althoguh I only took two of the three territories, it caused so many problems that four of the ruler's six children revolted and formed new clans (a fifth was already dead at the time, and a sixth would eventually rebel as well). Meanwhile, the Guttaker Kindred (blue/gray, on-screen) is down to a 39-year-old ruler and a 39-year-old wife, both old for Masklings.

It's safe to say that rival forces are neutered; the only remaining issue is playing whack-a-mole with Ravensworn and Hungry Maw (who are an even bigger issue at 61 territories).

The save, if you're interested.

Victory! King Nas the Magnificent -- who looks surprisingly young for an 83-year-old -- is the ruler of the entire world.

As I suspected earlier, Tedndyou (the green/brown in the previous post) was the last survivor, although they don't get credit.  After decades of no border changed, the blue/gray maskling force managed to take the last empty province shortly before I conquered their original provinces. They managed to build thorns just below the one usable crossing to Tedndyou, so I had to wait for them to be cleared.

As for Wittoall (red/white), they had two major issues. The first was being totally unable to handle the roving ravensworn; although you see three such units in the upper-right, that's actually five units. I kept rebuilding farms and roads so they'd wander around instead of causing problems. 

Wittoall's other problem:

Yes, that's a maximum population of 682 people (and 24 nobles). There's absolutely no way of handling that (a 7/7/7 family member would be the highest-stats officer ever, yet could only handle 630 people), so I removed extra houses ASAP and (since there was a Hungry Maw infestation, I used the Purge ability). Trying to abandon it would cost 154.1 legitimacy (which would be ruinous!), so if this wasn't the very end of the game I'd bring in plenty of soldiers and gradually Purge it down to acceptable populations as my soldiers fought off raiders.

As for the retrospective, the problems from the first post describe it well: Ravensworn/Hungry Maw everywhere, plus a severe province limit. I fully respect your choice to be on break from Bronze Age, but when you return to working on it (whether it's three days from now, three weeks from now, three months from now, or three years from now), I recommend two changes:

(1) Cut back on Ravensworn/Hungry Maw outbreaks. If I was the coder, I'd add a check of (1000/sqrt(territories owned)) out of 1000; that way, instead of someone with X territories having X times as many outbreaks as someone with one territory, they'd only have sqrt(X) times as many.

(2) If you have twenty territories, surely that gives more prestige than having only one! So I'd add a small bonus to monthly legitimacy (say, territories*0.05).

EDIT: Here's the final save. Next game I think I'll play as Shontu or Masklings (or Twelpers!).

Nice!!