Here is the full list of all 23 Afterparty achievements.
Beat Satan and earn your way back home.
Intentionally curse twenty times.
Recruit the Drunk Idiot Demon for Satan's final challenge.
Make friends with Sam.
Reunite Milo and Lola.
Play as Milo after fighting with Lola.
Get Asmodeus's Seal of Approval.
Get Apollyon's Seal of Approval.
Get an Invite to Satan's from Lynda.
Don't miss a step while dancing.
Kick off your adventure in Hell.
Try 20 different drink types.
Get an Invite to Satan's from Fela.
Play as Lola after fighting with Milo.
Intentionally lose to Satan.
Fail to beat Satan.
Make friends with Wormhorn.
Reunite Beth and Asmodeus.
Play a perfect game of beer pong.
Play a perfect stacking game.
Drink a lot of booze.
Waste 20 minutes on Bicker.
Pet the damn dog.