He never actually existed but if you're speaking of where he died in mythology...it was in Troy!
Your Achilles heel is actually a statement when mentioning a weakness of yours or actually weak ankle/heelzperiodz I suppose you can't really die from it under basic circumstances
Yes, he did.
Achilles Rizzoli died in 1981.
Achilles Statius died in 1581.
Achilles Frydman died in 1940.
Achilles Gasser died in 1577.
Achilles Fang died in 1995.
Achilles Alferaki died on 1846-07-03.
James Achilles Kirkpatrick died in 1805.
Theodore Achilles died on 1986-04-08.
That Achilles would die shortly after.
All mortals and heroes die.