I build 2 housing blocks with no slums. I let 3 houses envolve to spacious manors just to get the prosperity rating up to 100 and to fix some unemployment. The living area is protected with a wall. Only dubble walls at the attacks spots.
I build 6 army companies. 4 infantry and 2 archers. 3 of the infantry have the best experience rating and 1 has elite. The 2 archers are both masters in experience.
I build an area of 14 towers in the south-west corner where I fight all the attacks. There are another 7 towers in the north-west area. The attacks in this mission are pretty heavy. I suggest where ever the attacks come from to use your archers to get the enemy towards the 14 towers area.