NPC Conditions Description
{{{size}}} Alchemist After beating Eye of Cthulhu Utility pots (teleport, heal, mana); some different materials.
{{{size}}} Brewer After beating Eye of Cthulhu Pots from vanilla and a lot of other mods.
{{{size}}} Jeweler After beating Eye of Cthulhu Gems, bands, sturdy fossils. Has an Arena Shop with arena buffs and such.
{{{size}}} Architect If you have any 3 NPCs present Blocks, furniture and different crafting stations.
{{{size}}} Operator After beating Eater of Worlds / Brain of Cthulhu and having Wing of The World placed in empty house Boss drops and EGO equipment; Treasure Bags if not turned off in config.
{{{size}}} Musician After beating Skeletron Music boxes, including modded ones.
{{{size}}} Young Brewer Hardmode. Alchemist and Brewer are alive or Potion-combinations, flasks and some other stuff.
{{{size}}} Explorer If certain conditions are met Explorer's Brew, end-game materials, recipes for powerful items and ammo for them.
{{{size}}} Tinkerer After beating Eye of Cthulhu Sells accessories. Using Paper Tubes will unlock different ones for you to buy from his shop.

Explorer will not spawn naturally by herself. You need to find a way of spawning her. Torn Notes, dropped from vanilla bosses, will help you. Make sure to thoroughly read all of them.

Message you get after beating Moon Lord for the first time and top spoiler in #spoilers channel (Discord) can help too.

GIF-Instruction for summoning Explorer (use it only if you can't figure this out): [Boop]

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