I tried playing the updated version, but it was unsuccessful. Around week 5, I was surrounded by purple and brown factions. I could defeat one, but the other was impossible to beat. The brown Goshak (level 25, 24 attack, powerful ballista) attacks even the Castle where my main hero (level 14) can't resist him in any way. The resource situation is still terrible, and this greatly diminishes the enjoyment of the game.

Regarding resources, there's a fine line. It seems that two mills in the Dungeon, a dwarf pen, and a sufficient amount of random resources from neutral creatures should be enough for a more or less normal advance to the surface and capturing mines, utopias, elemental towers, etc. At least, the resource situation has only improved compared to the previous version.

Of course, Goshak came in very well-developed. But again, there haven't been any enhancements to the brown and purple players since the previous version. It's good that the AI is leveling up intelligently, choosing truly useful skills.
Theoretically, I think he can be defeated in the Castle; you just need to destroy the catapult quickly with Devil's Chain. Battle Magic and Sharp Mind can also help. What skills did your main hero have?