Walkthrough for the "Tribes of the East" expansion.

Guys, help! In the fourth campaign (playing as the mages), on the 4th map. Zehir moves around on the surface, and a dwarf moves around in the dungeon. As soon as Zehir captures the mines, a dwarf appears in the dungeon and attacks the castle. And I keep getting defeated. I'm tired of these temptresses and the enemy hero, who constantly casts the "Enchant" spell. Runes don't help :(
Also, I have -2 luck, and the enemy has +2. I'm fed up.