Achilles was the Greeks' finest warrior during the Trojan War. His mother, the nymph Thetis, dipped him in the River Styx to make him invulnerable in battle—except for his heel, where she gripped the baby. During the Trojan War, Achilles achieved fame by slaying Hector outside the city gates. But he didn't have much time to savor his conquest. Achilles died later in battle when an arrow shot by the Trojan prince Paris, guided by the gods, struck the one vulnerable spot on his body: his heel.emoji