Fortress versus Necropolis.

I think you should take Phantom and Heavenly Shield – equip them on the vampires. Cast Subjugation and Berserk on the Berserkers and Warriors. In general, if your opponent is playing as Ingvar, you should try to rush him – look at Kaspar as a hero. By the end of the second week, you should have around 15-20 vampires consistently. Create chains, pass them to Kaspar + magic (summoning – trap, crystal!) and darkness with weakening spells (but don't take the debuff on armor, the warriors have resistance to it). In general, by the 3rd week, you should have around 250 skeletons-warriors, zombies (not upgraded – just as meat), ghosts (only weekly, no need to raise them), and vampires (start raising vampires instead of warriors from the second week). Take a look – maybe it will work out. If it goes into the late game, Education and Logistics are a must – you can even go into Single-Player Adventure.