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