Attaching your save, but now without Rolf's imba army. Now you're on equal footing. Good luck with the game!
http://rghost.ru/51772884
Added after 1 minute
So it's month 2 for me. I capture the first town, which the dwarves couldn't be bothered to defend properly, but then a corner of the map opens up — and there's Rolf with a hefty army: 41 Priests, 44 Dragons (various upgrades 12-16-16), Champions (0-26-21), Arcate's Warriors (195). I hope I can hold the town.
Added after 13 minutes
I couldn't hold it, I'll go home for reinforcements.
This Rolf guy bums me out. Apparently, I'll have to take Town Portal away from the AI. Personally, I get him gathering an army out of portal guards — 20-25 different types of level-7 units, and I fight him.