"Escape to Salvation" - "Magnificent Retreat" [Campaign 4, Mission 4]

In my opinion, the last campaign in the third expansion is the easiest; it's much easier to complete with a hero than, say, the previous one. And I won't even talk about the last mission because with the Warlock's omniscience, you can move mountains. I don't remember any difficulties in this mission because all the heroes have great abilities: Freya with her vengeance, Wolfsten with his unlock, and Kujin with her mega-ability, which is useful against demons. Perhaps only the final battle with Biara was a bit challenging. And the hordes of neutral creatures don't seem very serious.
P.S. I didn't see any green little men.