I would put the 5th campaign, 5th mission - Higher Vampire - in first place. Second place is not awarded. They were all easy.:rolleyes:
Also, it greatly simplifies the passage that each AI opponent stays on their own territory, and no one tries to recapture castles outside their territory. Therefore, gathering 2 huge armies (your own and the Necromancer's) is just a matter of time. In my case, the Necromancer's army was even larger