It is up to you to prepare and fortify the best defense you can possibly muster to keep the barbarians out of the walls. There are different difficulty levels for you to test your skill and replay the game once you’ve finished on a more challenging setting. If you hold out for long enough then you will receive support from the wizard. You will first be defending the mines. Build up walls to place your defending units on so that you can repel those pesky Barbarians. Once you earn enough gold by killing enemies then you will unlock new units and items to help you in your fight.