When Hector was hit by a rock, he was healed by Apollo, making him stronger and faster than he was before.
Under Hector's leadership, the Trojans began pushing the Greeks closer and closer to the shore
With the Greeks losing, Patroclus begged Achilles to come and rejoin the war but Achilles refused.
Please?!
No.
Patroclus went into battle, fighting bravely, but died at the hands of Hector.
Achilles' one weakness was his heel. Knowing this, Apollo guided one of the Trojans' arrows to hit him in the heel, defeating him.
An idea of Odysseus, the Greeks made a large wooden horse and hid a few soldiers inside. The Trojans thought they had won the war and that the horse was a gift from the Greeks. The Odysseus and the other soldiers snuck out of the horse, killed the guards, opened the gates, and destroyed Troy.
In order to avenge the death of his friend, Achilles reenters battle. The Greeks push the Trojans all the way back to Troy where Achilles finally defeats Hector.