With all individual prerequisites sitting in your collection, you can now launch the exclusive sequence to unlock the ultimate reward: the .
Set your active background layout to the newly acquired Ritual Background .
Bury the lovely craft piston trap in your backyard, facing west. Leave it there for one full lunar cycle. The piston will slowly compress the negativity into nothing.
: If done correctly, the Jack-o'-Lantern Girl will be permanently unlocked. For the full achievement, you may need to repeat this process with other specific mobs like the Sheep or Bee while they are equipped with the pumpkin hat. Key Exclusive Content in v.0.2.999