The roads were so difficult that I could only make it to my own computer and play on difficulty level 124 (I found 25 archers and 12 aerial units). Then I spent several days capturing 3 outposts and moving to the center (30 griffins, 30 minotaurs, and 55 elementals arrived). I found both of the opponent's castles, an uncaptured utopia (sword +5 to all stats), and only then did I realize that diplomacy hadn't spared him either (there were no taverns). I regrouped in the remaining three territories (60 vampires, 20 horses, 27 manticores), but I couldn't find anything decisive against his forces, which were twice as large and had better stats.