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.
Play as Milo after fighting with Lola.
Got an Invite to Satan's from Lynda.
Didn't miss a step while dancing.
Intentionally cursed twenty times.
Played a perfect game of beer pong.
Intentionally lost to Satan.
Failed to beat Satan.
Beat Satan and earn your way back home.
Recruited the Drunk Idiot Demon for Satan's final challenge.
Made friends with Sam.
Made friends with Wormhorn.
Reunited Milo and Lola.
Played as Lola after fighting with Milo.
Got Apollyon's Seal of Approval.
Drank a lot of booze.
Tried 20 different drink types.
Got Asmodeus's Seal of Approval.
Reunited Beth and Asmodeus.
Pet the damn dog.
Got an Invite to Satan's from Fela.
Played a perfect drinking game.
Wasted 20 minutes on Bicker.
Kicked off your adventure in Hell.