Final battle

[Hento]

Has anyone managed to resolve the final battle without any losses, since Haas uses armageddon spells?

My army consisted of 1 unit-9 archidemons and I used 3 spells-invisibility, fire rain and ice snake, when I ran out of mana so I couldn't use invisibility, Haas started to use armageddon although his army was already defeated, just a few black dragons left which can't touch archidemons because of fire immunity.

Up until this battle I hadn't lost a single unit...