Faults of elysian shows the mistakes made in the mythos by gods and humans alike, let it be icarus flying too close to the sun even tho he was told not to, medusa being cursed by Athena to be a gorgon because of sleeping with Poseidon even tho she never gave her consent,   the dead not daring to cross Cerberus as to make the mistake of trying to leave hell Cerberus will consume them until they feel hell over and over again and scare off anyone alive that tries to enter.