Orc tactics against Dwarves.

And how exactly do you do it, if it's not a secret?)) I mean, what's the sequence for learning skills? Or just level up a super ability?

It's very simple: take Hagge (level up machines) or Tilshek, buy three heroes if possible, and have a large army to protect your main troops! Level up Ballista, Tent, Expert Machines, and 3 Ballista shots! Then Attack, Shooting, and Fire Arrows! Buy an improved growth rate in 4 weeks and head towards the enemy! Along the way, you'll destroy everything!

Added 4 minutes later
Along the way, you'll also collect artifacts, and there's a 100% guarantee that not a single gnome will survive! On small maps with Orcs, it's impossible to win with anyone!