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the Ring of the Shadowmarked was given by the author; simply because there was an invasion from the underworld, it became my Ring of Dominion, but this is already the 4th mission, and there aren't any particular problems here.
Regarding mission 2, part 2, all the hero's creatures and those in this location are no different from the originals (only the squires are stronger, but there's only one stack of them).
Perhaps if you exit the first mission with an attack and defense strategy, it will be better. I exited with an attack and machines/logistics strategy, without defense. The machines were useful later, but the lack of defense when exiting the first map seems to have had an impact here.