take ur time and go till imperial age and reaserch the bombtower now choose 
1 or 2 villagers and take them near a enemy buulding and just make the tower 
near tha building and take the villager away after some time the tower will 
be attacking the building but u must also take some archer with u and keep 
near the tower so that the tower won't be distroyedor just make a keep near 
it and put some archer inside  or when u r attacking your enemy and if u r 
inside the enemy town you can take some villagers and take them near a enemy
buulding and just make the tower near the buildings one by one it will save 
ur time and u will win easily (u must have enough stones)good luck on your 
conquest.