The House of Flame for HoMM 3 made me realize that Fire Magic is the strongest skill in the game.
I think the only way to win this battle (except waiting several years to accumulate enough units, which I frankly can't be bothered with) is with Expert Berserk. Unfortunately the main hero starts will a full roster of skills of which Fire Magic was not one of them.
I have the Armageddon's Blade, but even combined with the Orb of Vulnerability it has no effect for some reason, although against so huge stacks it would only make small dent anyway.
According to the spoiler in the ReadMe you should use a second hero with Expert Fire Magic to reduce the defenders to one stack.
I think the only way to win this battle (except waiting several years to accumulate enough units, which I frankly can't be bothered with) is with Expert Berserk. Unfortunately the main hero starts will a full roster of skills of which Fire Magic was not one of them.
I have the Armageddon's Blade, but even combined with the Orb of Vulnerability it has no effect for some reason, although against so huge stacks it would only make small dent anyway.
According to the spoiler in the ReadMe you should use a second hero with Expert Fire Magic to reduce the defenders to one stack.