Heroes can be purchased and upgraded from the second tab, labeled by a person and an axe and colored blue. They provide you with autonomous gameplay, relieving you of the duty of tapping the screen in order to deal damage. While this is helpful, the great majority of damage that will be dealt will be via tapping the screen. Therefore, depending on heroes to play the game for you is not the best strategy.. Heroes are characters the player can hire to fight for them after defeating them as a boss. The full description of Heroes and a list of Heroes in the order they are . Heroes can be purchased and upgraded from the second tab, labeled by a person and an axe and colored blue. They provide you with autonomous gameplay, relieving you of .