The only extended analysis of a myth by Freud is that of Prometheus and the theft of fire.
Fire is a libido symbol. The fennel stock in which Prometheus stole the fire is a phallic symbol. The eating of Prometheus's liver by the eagle of father.Zeus is a castration symbol. But it gets odder and more interesting when Freud asks why primitive men imagined so cruel a punishment for the culture hero who brought them fire and civilization.
Fire could only be preserved, says Freud, once the natural male instinct to urinate on fire (apparently confirmed by psychoanalytic investigation) was repressed.
Behind Prometheus stands a lawgiver who forbade urination on the fire.
His subjects were grateful for the ensuing benefits of fire, but also resentful for the repression of their libido, and so imagined his punishment.
In the Myth of Illuyanka, a dragon named Illuyanka next challenges The Storm-god, actually defeats him, and takes away his heart and his eyes. The Storm-god goes away and marries a poor man's daughter, has a son, and when this son grows up he marries the daughter of the dragon Illuyanka. The Storm-god then instructs his son to ask his father-in-law for his heart and eyes. He asks and they are freely given. After they are restored, the goddess Inara helps defeat Illuyanka by inviting him to a feast. There he overindulges and, when too bloated to return to his lair, is tied up by the hero Hupasiya and then killed by the Storm-god. As he is about to kill Illuyanka, the Storm-god's son intervenes on Illuyanka's behalf, so the Storm-god kills them both.