Complex sentence: As the warriors take heed of the situation, Ryu returns from his training and defeats Necalli in combat, forcing him to retreat for good, and he joins his companions in a second attack on the Shadaloo base.
Split into simpler sentences: As the warriors take heed of the situation, Ryu returns from his training and defeats Necalli in combat, forcing him to retreat for good. He then joins his companions in a second attack on the Shadaloo base.