Random.
Added 1 minute ago
A newbie's perspective. In reality, by the 2nd or 3rd month, a well-developed Chaos plus a Sorceress can work wonders against Demons. And of course, the right artifacts.
An Elf can easily acquire Education and Chaos, but Demons have nothing to resist this Chaos with.
P.S. What is the chance of getting a spellcaster among the Demons?
P.P.S. In my opinion, it will work if you develop a second Warlock.