Well, what can you do? The map is challenging. Simply accumulating an army while staying in one place is definitely not the necessary level of tactics for successful completion. But by defeating the Humm, you can find a mentor and learn Dark magic, which, as everyone knows, can compensate for any numerical superiority of the enemy. However, I have rarely seen it actually being used on this map. In the end, the player can control three Dwarf cities, which is a lot of units. Dwarf units, always powerful with runes and a good build, and there are all the possibilities to create an uber Dwarf here. So, I don't know how it happened that you saw Kirdan's army, but at the same time, you don't control the map, considering that he is at the very end and only receives an army upon contact with the player.
Well, what can you do? The map is challenging. Simply accumulating an army while staying in one place is definitely not the necessary level of tactics for successful completion. But by defeating the Humm, you can find a mentor and learn Dark magic, which, as everyone knows, can compensate for any numerical superiority of the enemy. However, I have rarely seen it actually being used on this map. In the end, the player can control three Dwarf cities, which is a lot of units. Dwarf units, always powerful with runes and a good build, and there are all the possibilities to create an uber Dwarf here. So, I don't know how it happened that you saw Kirdan's army, but at the same time, you don't control the map, considering that he is at the very end and only receives an army upon contact with the player.