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

It's difficult to play against the Elves. They can cast Meteor Shower and wipe everyone out.

In that case, it's difficult for any race to play against the Elves :) And the high initiative of the demon creatures won't allow the Warlock to cast many spells before the battle ends. I don't think he's a very dangerous enemy for demons.

Demonlight, the problem with demons is actually in the early game, as they have the most difficult start of all the races (although alt-demons partially fixed the problem). Perhaps for this reason, demons don't have many fans. And regarding Chaos, I'm surprised. Is that with the demon's spellpower? How much will you be able to cast? I hope it's at least over 10...