Which faction poses the greatest challenge for the Dwarves?

I think there was such a battle, I played with a friend, he was an Orc, and I was a Dwarf. He wasn't very good with Orcs (and I don't really like them; I prefer races that can cast spells rather than just shout: Dwarves, Mages – first, and the Academy and Haven – second). Against an Orc, you can use Readiness plus the Ghost Rune, and the Orc's first attacks might not work! -> The Orc doesn't really build up Fury, and my hero, Erling, has Chaos skills + Berserkers and Priests...
The battle was somewhere in the middle of the second month, as he didn't risk using blocking units and just cast spells.