You are amyetri, a soul that failed to perform the Orphic rites and therefore condemned to spend eternity trapped in a corporeal body.
The only way you can achieve salvation is to suffer the Twelve Tasks of Purgatory. By undertaking these trials, you will relive the suffering of the Olympian god Dionysus.
If you come out the other end unscathed, you will have proven yourself worthy of the company of Orpheus, who will finally permit you to enter Elysium at his everlasting side.
If you fail the Twelve Tasks of Purgatory, you will end up back at the Pantheon, forced to undertake the trials from scratch again.