Try to invest your gold as quick as you can earn it, buying employees and other such things. This way you will not be all set for the approaching enemy intrusion. Ensure that you focus on for archers and walls. A single archer will not do you much great, because shots frequently miss out on, so aim to collect lots of archers and let their combined may turn foes into pincushions. Do not always build towers for your archers, however, due to the fact that then they will not wish to go anywhere else.