A stupid throw. I captured the Dungeon and went to kill his heroes. Despite the fact that I had a ring +1 to attack and defense and a shield +4. I killed his hero with a ballista, though 1st level but with parameters 5 5 and 12 Grands. He had 15 Evil Eyes, which just wouldn't die under 100 Troglodytes, 10 Harpies, and 30 Gnoll with a Cu. I died without a chance. Got upset and surrendered.
Thanks for the game.