The opponent played Necropolis, and I somehow managed to seize all his castles by the end of the second week, except for the corner treasure zone. I successfully built up the guild with Town Portal and Dimension Door; everything pointed toward Darkello having to surrender, but that wasn't the case. After a couple of my poorly planned raids on the FB where I lost a lot of meat, Darkello ended up winning a hopeless game.
Thanks for the game and the lesson )