Basically, I started with an overpowered Necropolis faction with 200% bonuses. As you can see from the screenshot, on day 312, I encountered an opponent. The next day, I went to the metro and recruited a cartographer. The opponents' armies were weak. After a week, I captured both brown castles and stopped playing because it became too easy. Oh yeah, I also collected the Amulet of the Dead or something like that, and then even strong units like 600+ Crusaders were easily defeated without any losses, and about 85-90% of them were resurrected as skeletons.