Full list of all 23 Afterparty achievements worth 1,000 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Xbox One.
Achievements they've won
Achievements they've not won
Intentionally lose to Satan.
Fail to beat Satan.
Drink a lot of booze.
Played as Milo after fighting with Lola.
Play a perfect drinking game.
Reunite Beth and Asmodeus.
Try 20 different drink types.
Pet the damn dog.
Get an Invite to Satan's from Lynda.
Don't miss a step while dancing.
Beat Satan and earn your way back home.
Recruit the Drunk Idiot Demon for Satan's final challenge.
Make friends with Sam.
Make friends with Wormhorn.
Play a perfect game of beer pong.
Reunite Milo and Lola.
Play as Lola after fighting with Milo.
Intentionally curse twenty times.
Get Apollyon's Seal of Approval.
Get Asmodeus's Seal of Approval.
Waste 20 minutes on Bicker.
Get an Invite to Satan's from Fela.
Kick off your adventure in Hell.