to clarify about finding the moon, it's a random npc spawn event behind the autumn church. the fastest way to do this is to walk in and out of the church until the moon appears behind it. interact with it, and interact with it once more in the new area to find ___ .

don't forget to talk to the NPC that spawns in the sunken church for the achievement!
shoutout to Dev for playing the game and letting me watch!!