It depends, do you need to return your representative, or can we leave him on the moon? Latter is easier. Maybe he can hitchhike back with the aliens.
If it’s a one-way mission, it could be done with a Falcon heavy and a slapped-together lander sourced from NASA. Maybe even an old Gemini capsule or something from the Smithsonian.
Or you could send up a Falcon heavy with fuel payload, rendezvous with the ISS, pick up a 'naut, and steal a Soyuz, although I’m not sure if they can be configured to land on the moon
Emacs, you say?