Dwellings 2, 5
On the third one, I headed towards the Treasury.
By mistake, I broke through to the City and saw my own secondary dwelling.
I decided to build up my forces so as not to rush to the Gnomish city.
And then it turned out that it was closer to run to the Treasury to the Gnomish city than to my own.
In the end, by the end of the fourth week, I completely cleared the Treasury
by the time the Gnomish city entered it.
I retreated and ran to my secondary dwelling.
I received full reinforcements from the 4th and 5th weeks from my secondary dwelling.
I didn't find any mentors, so I went as is, without antimagic, to the Gnomish city,
plus I bought a few weeks' worth of troops from the Astrologer.

A lot of meat helped me win: https://ru.files.fm/u/awz8gh62

Thank you for the game.

DWP is being modest - it was the Gnomish city that had to go to the Orcish city - he saw that I had a secondary dwelling. And Krag was already coming to meet me. A battle in the field, when the Orcish city has one and a half to two times more troops - that's a real challenge. In the castle, I'm sure the outcome would have been different, despite the Orcish city having "March of the Dead" (Krag hit hard, but there was no stunning attack, and the units wouldn't have been able to take out one stack at a time, plus Erling would have been able to cast spells normally).
Well, here in the final, I probably made a few mistakes, but they weren't decisive - in the field, my chances were very slim.
About my game.
At level 21, I wasn't offered an attack even once (I was focused on ranged units from the very beginning). At level 22, they put light units in the last stack, which were completely useless, given the lack of regeneration and resurrection in the city or shops. And as a cherry on top - there was no resurrection rune.
Resource - grass, industrial zone - sand, main town - sand, Treasury - sand. The artifacts in the shops were terrible, with the exception of the Necropolis staff, which was bought in the Orcish city's gold zone, one day before the final. I'm actually surprised that the Gnomish city reached level 29 without significant losses.
Before entering the Treasury, there was only the lower level of darkness, which was good, but without "Battle of Divinity and Purity," the Gnomish city couldn't attack everything. That's why I entered my own Treasury a little late, where I bought some summoned creatures.
Well, in general, DWP did a great job, there's nothing to say - to break into my Treasury through his secondary dwelling so early - that also takes some effort. Maybe the guards there were weak, but still.
Thank you for the game.

P.S. Who came up with these secondary dwellings...