In general, there was a discussion in the thread about a simpler and, apparently, author-intended way to complete the final mission. Lord Gena could learn necromancy in his branch and summon legions of skeletons before transferring to the final map (dead units, both enemy and ours, are supposed to transfer). That is, the Dragon can simply be overwhelmed with brute skeletal force. However, for this, the campaign will have to be replayed from the middle.
In general, there was a discussion in the thread about a simpler and, apparently, author-intended way to complete the final mission. Lord Gena could learn necromancy in his branch and summon legions of skeletons before transferring to the final map (dead units, both enemy and ours, are supposed to transfer). That is, the Dragon can simply be overwhelmed with brute skeletal force. However, for this, the campaign will have to be replayed from the middle.