Before you is the gate leading to the castle. It is they who will become the object of attack by a huge army, consisting of the undead and all sorts of creepy creatures like goblins and orcs. There are archers on the towers of the gate, but you must activate them in Fortress Defense 2, only after that they will start shooting continuously at the approaching enemies. Your task is to ensure that there are enough defenders and periodically raise their level as soon as the money appears in the upper left corner. The treasury will be replenished from the destroyed monsters. In the lower right corner there is a button with crossed swords, you can use it to speed up the advance of the enemy army, and not wait until they gather and go into battle in Fortress Defense 2.