I might be wrong – I can’t possibly remember the level limit for every mission. As for spells, I think I chose Chaos and Education… Although it’s not very useful. And Darkness doesn’t appear as often for Demon Lords – I was offered Light more often! And with a greater number of Sylvan factions in this campaign than Inferno, the probability of Chaos and Dark magic spells appearing is significantly reduced compared to Light and Summoning… By the way, what is Agrail’s super ability?
Demons have a great super ability. The summoned creatures from the underworld appear instantly. You can immediately block enemy archers, and against melee units, you can create a barrier of summoned creatures.