Here it is, my personal solution for the 24th mission, Death in the Dunes:
Your starting position in the midst of the map without any arable land and four Sultans surrounding your keep isn't really optimal. But the current Deathmatch conditions in this scenario with plenty of gold and food will give you enough compensation for an effective start. You should begin by building up 1 granary, 7 stockpile elements, 4 woodcutters' huts, 1 market place, 1 armoury, 1 barrack and 1 engineer guild. After these preparations you have to enclose your keep including the near stone deposits by using all available stones at the beginning. Don't integrate any gatehouse in this first phase. Next you'll have to sell all your initial iron, pitch and wheat subsequently buying 50 bows and about 200 stones. Then place five square towers on every corner of your castle and arm each of them with mangonels. Recruit 50 archers and send 10 archers on each tower to control the enemies' activities. Now's the time to activate your mangonels by weakening the sensitive enemies' targets, like the keeps, gatehouses or workshops by sustained fire. Meanwhile your archers should kill the hostile peasants disturbing the enemies' economic development. By applying this procedure you will be straight on your way to victory, even in this early phase. Continue to expand your settlement and let your population prosper. Three quarries and 5 ox tethers will help you to proceed faster. Build up more towers and likewise place mangonels on it until the Sultans will suffer from lack of gold. Later you'll have to sell your produced stones to buy food, leather, swords and armours. Recruit more archers, crossbowmen, and swordsmen concerning the forthcoming final offensives. You should make your opponents angry with your mangonels until the Sultans would have spent all their money for reinforcements. That's the best moment to begin striking with your swordsmen and crossbowmen...and believe me, you'll succeed!