I have the complete edition of "Heroes of Might and Magic" from Buku. Why, after completing three campaigns from "The Restoration of Erathia," are the remaining three not unlocked?
You need to load your latest third save. This is the one you are prompted to save after completing the campaign. And it will appear.
Also, to unlock the next part of Erathia, you don't necessarily need to complete "Armageddon's Blade" or "The Shadow of Death." They are not connected to each other.
