In the first week, I built all structures except for the magic guild in my Castle. After that, there was a lot of aimless wandering. I captured a couple of outposts in the second week (4 Angels).
I was afraid to attack Utopia and headed for the nearest Treasury. By that time, my opponent already had 3 Ramparts, although his stats weren't significantly better.
At the end of the third week, I sent my main hero to the main Castle to transfer the main forces for the assault on Utopia. But then, an opponent's player emerged from the Dungeon and killed my main hero (he was riding a single Gremlin). Although he didn't have any artifacts, there was no point in continuing the game. On the next turn, the opponent takes the main Castle, and that's it.