Complex sentence: The only way was for a peasant to battle against the prince Zack eventually offered to duel with the prince, Maddie kisses Zack and he gains more confidence and beats the prince and also won Maddie's heart.
Split into simpler sentences: The only way was for a peasant (Zack) to battle against the prince. In the end, Maddie kisses Zack and he gains more confidence and beats the prince and won Maddie's heart.