I completed the map in 395 days.
I entered the Dungeon on the 2nd week of the 13th month.
Inside the Dungeon, I encountered serious enemy forces. My army was dwindling rapidly.
After defeating an Elven Scout with Raileg, I decided to try to break through to the Dwarf Fortress. The path to this fortress was blocked by several groups of Lava Dragons, each consisting of several tens of thousands. I defeated all the dragon groups. At the same time, I leveled up Raileg to level 39. I entered the Dwarf city with Raileg and learned "City Portal." Using the portal, I sent Raileg to the Dungeon. I divided Raileg's army with Sigryph. And easily defeated all the enemies.
Without Raileg's army, I'm afraid I wouldn't have been able to do it. Perhaps I should have gone to the Dungeon earlier. But I don't even know how I could have done that. Sigryph moved very well for me. Excellent logistics + Pathfinding + Path of War + Boots of Travel. And I never ignored the stables.
The computer handled the map well (Windows 7 32-bit, dual-core Athlon). It occasionally crashed when loading saves. The enemies didn't lag during their turns. Saving also didn't lag.
I really liked the map.
Thank you very much to the author.