The bearded Neanderthals decided to wage war against your tribe and you, as the leader of an obligation to protect its people. Firearms are not available to you, but huge boulders, cobbles and stones are everywhere in large quantities. Do not get lost when you see the first attack of the enemy and soon proceed to the defense of his cave. Casting enemy soldiers improvised cave stone projectiles so effectively, so as not to give them any chance to clean the mess in the cave of your tribe.