This mission is easy and no too complicated.
- Meet the Duncan's army;
- Capture Tor Hrall fortress;
- Wulfstan must survive.
- Reinforce your army with Dwarven units (0/10).
Hero: Main hero can reach 26th experience level maximally.
Bonus: Choose 50 Bear Riders or 15 Priests - they will reinforce your army substantially.
And you do not possess any castle again so be ready for a walk. Gather all possible resource. Exchange for a gold every treasure chest. It will be useful for allied units who want to join you (you can bribe them for 25 ore/wood, 15 gem/sulfur/mercury/crystal or 3000 gold).
You begin in (1). Head west all the time. Gather all possible resources and defeat all opponents. There is small Magma Dragons unit in (2) - they will join you gladly. But prepare for tough fight with Black Knights in (3). There will be casualties surely because Knights have first attack and they will get you quickly. Try to heal every attacked unit (best is to expose strong Bear Riders unit to them and to cast Raise Dead. Your units won't survive but you'll minimize casualties at least). There is a red watchtower in (4b). Now we have to go back to (7) - two-way passage monolith. You will pop up in (7) on the east.
Here you can visit key-master tent (4a) and then head south. There are many treasures there (9) and also Dragon Utopia (after won fight you can get many artifacts). There is also huge amount of money (10) and 15 Thanes who will join you (there is an invisible path among trees toward this place).
There is also a dozen or so Black Dragons nearby (9). You can use Divine Strength on Magma Dragons and kill beasts with their help. This is the most effective unit against them.
Having the key to red watchtower head north. You will find a Cartographer in (8) who may reveal a whole map (for 4000 gold). Rolf will come out from one-way portal in (6). You have to defeat his small army.
Being in (5) first recruit all units who want that. Then you can upgrade them in Fort. Having all plundered go to the (6a) and be transported to once visited point (6). No you can go and meet Duncan (11) and take a final (and a banal) battle in this scenario (12).