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Heroes 5 walkthrough - Campaign 3 - Mission 5
Have wulfstan clear as much of the surface as possible (take all mines, caches, etc.), and make sure he finds the blue keymaster tent (it's past the first dwarven garrison, IRRC). later, you can zip over past the red garrision, but DON'T get too close to the castle in the SW until you are ready; Laszlo will move to attack you if you do.
Take ALL of the Haven troops and place them with your best haven hero (which should be Freyda, since that's the one you developed the most).
Take Freyda and Shadwyn underground ASAP. Have whoever has the best army take the closest underground town, send the other to the further gate to take that town. again, don't wait around, have whoever is closest go and take the third town.
While you are taking the three red towns, focus on building up armies that would complement the best either Shadwyn or Freyda have to offer; typically only focus on the top tiers, though i would pick succubi, pit lords, and devils. Only upgrade ONE of the red castles (most likely the last castle you take will be pretty far along), build the basic creature structures at the others and transfer them via caravan to the upgraded town for upgrading.
As soon as one of your heroes is free from dealing with the red towns, send them to the blue key gate. the stack guarding the teleporter joined my hero, so I would send whichever hero matches the stack type you see there.
Take the dungeon town and again, build complements for the army you are developing with inferno. After two months, I easily had enough with the combined armies to get the job done.
Alaric will apparently completely ignore you if you find him on the dwarf side, so don't worry about attacking him.
Get ready for the dwarf hero to blast your armies with armageddon over and over, and it's a "timed" battle (that's worth a rant in and of itself, but not here), so be ready for that too.
My recommendation would be too use Shadwyn with the underground armies, don't waste time trying to resurrect anything, just blast away with ranged attacks and empowered meteor showers. your blackies will survive the spell onslaughts, so once the heavy hitters in the castle are whittled down a bit, move your dragons on in and mop up. Don't wait with your devils, though, move those guys in there in the very first turn for maximum impact; suggest using them on any ranged units, the spearchuckers if not protected, or the warlords if they are.
Author: Sir Toejam
You can send your walkthrough campaigns on Email: evgkuz@yandex.ru