yeah, I HATE that bloody Peasant. Anyway, what's his problem?
If I had the 100 Succubuses (Demonesses) he has at his disposal... I would not be running around picking fights, I'd have 'other' things on my mind.
On a more serious note... I'd frankly remove Armageddon from the enemy's spell list. Unlike you, the enemy has no compulsion to keep his troops alive, which puts an unfair advantage on his part - and he has enough mana to spam it non-stop. The enemy AI should at least consider using this spell - like how it works in Heroes III, where they only use it if they have fire-immune creatures or are losing the battle and retreating.