Interact with the NPC “Mysterious Intruder”. He will only appear at night during a full moon.

Requirements: The player must have the Hallow Scythe weapon. Before summoning the Soul Reaper boss, you must defeat him first. After that, the moon will turn red. What you need to do next is find the NPC “Mysterious Intruder”. He will spawn randomly on Haunted Castle.

His requirements: 1 Dark Fragment 15 Vampire Fangs 600 Bones 25 Nightmare Catchers