- Enter and climb the Wizard of Yendor's tower via the portal in the correct Fake Wizard's Tower, OR, wake the Wizard with a mind flayer mind-blast or the sound of a drum of earthquake from outside his tower.
- Retrieve the Book of the Dead from the wizard, by killing him or stealing it while polymorphed into a nymph.
- Head down to the Vibrating Square.
- Perform the Invocation on the Vibrating Square.
- Retrieve the Amulet of Yendor from the High Priest of Moloch inside the Sanctum by killing him or sicking a covetous monster (like a powerful demon) on him.
- Climb up the dungeon, fighting the Mysterious Force and the Wizard along the way.
- Pass through the Elemental Planes.
- Find the correct altar on the Astral Plane (that's probably the coaligned one, unless using a helm of opposite alignment or escaping in celestial disgrace) and offer the Amulet. But watch out for the Riders!
- Go to #nethack on freenode.net to brag and collect your congratulations.