Against which factions is it easier for demons to fight, and against which is it more difficult?

I think demons don't have any particularly strong enemies. Especially since they are waging war on 7 fronts (i.e., against each race), and also among themselves. This suits them perfectly, because their Legions are endless... But if we're talking about the topic, I think it's the Dwarves. Not because their troops are the best, no! It's because they have a "natural" immunity to magic, and they are also excellent defenders. Well, I think the rest are quite simple: Humans, Elves, Dark Elves, and of course, the Undead. As Bethrezen said, addressing the undead: "your flesh burns, just like any other..." By the way, the creator of this poll, are you aware that "Necropolis" is spelled with an "e"? And why isn't the Orcs race included in the poll?