Achilles was the most active hero of the Achaeans. He destroyed eleven cities in the mainland around Troy and twelve others in the opposite islands.
He plundered the country of Aeneas in the region of Troas. Aeneas who tended his flocks on the mountain Ida, fled at the sight of Achilles, who hunted him. Arriving in town Lyrnissos, Aeneas took refuge in the palace of King Mynetas. Achilles then attacked and conquered the city, killing the king, his three sons and brother named Epistrofos. He got his wife Briseis as a trophy and brought her to the camp of the Achaeans, where Agamemnon offered her to be Achilles’ concubine. Aeneas, however managed to escape with the divine intervention of his mother, the goddess Aphrodite.
Achilled also seized Pidassos, Lesvos, Colophon, Klazomenai and many other neighboring cities. He also killed young Troilus, son of Priam. There was a prophecy that said that if Troilus reached 20 years of age, Troy would never fall.
Ypoplakia Thebes, with king Eetion was built beneath the mountain Plakos. That’s why it was called Ypoplakia (under the mountain Plakos). Eetion had seven sons and one daughter, Andromache, who was married to Hector.
At the time of Achilles siege to Ypoplakia Thebes , Cressida, daughter of the priest of Apollo, Chrysis happened to be there. Cressida was a guest of Eetion’s sister, Ifinoe. Achilles finally conquered Thebes, killed the king and his sons and took as slaves in his scene Eetion’s wife and Cressida.
He gave royal funeral honours to Eetion. The queen was regained by the ransom of her father and Cressida was offered to Agamemnon as a concubine in his tent.