When Achilles was born, it had been prophesied he would have an early death.
The death of Achilles was caused by an arrow of the Trojan hero, Paris. Paris, supported by Greek god Apollo, threw a poisoned arrow and aimed exactly at the heel of Achilles; the only spot Achilles was vulnerable.
Immediately after Achilles fell dead, a huge fighting began above his body. In the end, Odysseus managed to keep the Trojans back and Ajax brought the body back to the greek camp.
Back in the greek camp, Thetis with the Nereids came from the sea and, together with the Achaeans, mourned their hero for seventeen days and seventeen nights. Then his body was burned upon a pyre and his ashes were buried in a tumulus in Leuces(Alba).
A monument was raised to his memory and funeral games were held in Achilles' honor. Thetis wanted to give Achilles armour was given to Odysseus, the bravest warrior of the Trojan War after Achilles.