Continuously, 5 arrows went toward a rock golem. Sam didn't attack all the golems at the same time. He knows that he won't be able to kill all those golems. Even if he could kill all the golems at the same time, for that he needed to use almost 100% of his spiritual energy, and that would be very dangerous for him. Right now, Alena wasn't with him and so if he uses 100% spiritual energy, then for almost 1 hour, he will need to recover from the headache. At that time, he won't be able to fight monsters properly and that will be very dangerous for him. Because of this, he decided to kill the golems one by one.