the sword called legacy

this is a story about a boy and the search for a sword, called legacy. obtaining the sword is something not even the blacksmith who owns the mighty, goddess forge. hasn't been able to obtain it. earning or achieving the sword is a vigorous task, even if their levels exceeds a thousand or not. Legacy only causes the capture two ideals, chaos and torment, or accomplishments and achievement.
(something to note: the dungeon across the world, a.k.a the universal elevator. has infinite floors)