During a keeper game, after beating several attacks and one "final attack" i reached the point i could rise several vampire lords
I decided then to possess one of them, equip myself with the chain armor from a knight (as it was better than what that vampire lord was wearing), then i went to attack one of the village alone (so my army stayed at my Keep to prevent a nasty attack without defenders to stop them), and noticed that it was a castle.
At the entrance of the castle i butchered several enemies, until the Duke of Tethe'all appeared, the fight was long as i guess both adversaries were high end , and then probably high defenses and health.
At some point my Vampire Lord gained the advantage :
The Duke retreated, while some of his soldiers appeared at the gate (i entered the caste once and noticed there were still several soldiers behind the Duke).
During the time of that battle, i had a message telling me of an attack and another about a "final attack" ... from the castle i was attacking, and i saw none moving out of that entrance.
At that point i started to miss every of my attacks, and noticed that i had no more weapon, in fact it was on the ground ... with my arm, meaning no more weapon at all, i decided to move back and gather the other vampire lords that were still in my keep.
While the enemy soldiers were following me , much slower than the Vampire Lord i gained some distance easily.
Once i entered my keep, a message told me the enemy was actually defeated (despite it's obvious they were not, the Duke was still alive and there was a bunch of soldier trying to find my Vampire Lord) , followed a couple of second later by the game over panel with all the stats telling me that i won ?