Get the golden flute in the room 'A Labyrinthine Prison'.
Go to the room 'Towards the Elysian Fields.'
Play the golden flute.
Eurydice will appear, wait for her to ask for the flute as a token to remember her love by.
Give flute Eurydice, she asks you to go to Orpheus.
Get to Orpheus in the room 'A Steep Path'.
ASK ORPHEUS I AM RESTING AT THE ELYSIAN FIELDS NOW, WAITING FOR HIM
You get XP and a whois!