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I replayed the same map with the Genovese Elves, choosing Ossir, the Elven Archer leader, as my starting hero. I completed the map in a month and a week and six days (same as "hero").
At the beginning of the game, I only used the main hero and his Elven Archer specialization. By the second week, I broke through the northern outpost of the Pyrenean Dwarves and destroyed them, preventing them from developing. I then descended back home through the western outpost, and along the way, I captured the Dwarven armor set and the "Unicorn Bow," ensuring that Ossir could shoot without penalties.
By the end of the third week, I captured the Eternal City, which was already being besieged by the Eastern Orcs. I drove them away and freed Maximus, whom I immediately put on a ship and sent to capture Carthage.
Ossir turned northeast towards the Orcs. Passing by his own lands, he received reinforcements in the form of Ilfina, another batch of archers hired in the cities and generators, and several green dragons.
I transferred the remaining creatures from the two Elven castles, of which there were now a sufficient number, to Aven, whom I also put on a ship and sent to capture Corsica.
As a result, by the end of the first week of the second month, all the heroes had completed their tasks: Ossir and Ilfina passed through the Orcish lands to the Greek Demons and captured all the cities of both races. Maximus defeated the main forces of the Carthaginian mages at sea, landed in North Africa, and captured both cities, which by that time had come under the jurisdiction of the Corsican Necromancers. Aven landed on Corsica, broke through the outpost, captured Caralis, and destroyed the Necromancers (Alalia remained neutral).
For the remaining six days of the last week, I chased the remaining ships of the Greek Demons across the sea.
In my opinion, the Elves have a much more advantageous position for waging wars of conquest on this map than the Necromancers.