This is a 'guide' for getting all the NPC's (There is a badge for it) Hope you enjoy Pre-Hardmode Guide: Starting Off, Easy Peasy Merchant: Having at least 50 silver coins available. Nurse: Increase your life, by mining and using Crystal Hearts, found underground. Demolitionist: Finding a explosive, such as grenades,bombs, etc. Dryad: Defeating the Eye of Cthulhu, Eater Of Worlds, Brain Of Cthulhu (not King Slime). Dye Trader: Getting a dye item Yellow marigold, Red husk,Blueberries) as well as getting one Strange Plant or Defeating 1 Pre-hardmode Boss. Stylist: Find this NPC webbed in a spider cavern. (BEWARE) Witch Doctor: Queen Bee is defeated. Clothier: Skeletron is defeated, by talking to the Old Man at the Dungeon. Mechanic: Found in the dungeon randomly. Goblin Tinkerer: Find this NPC randomly in the cavern layer after defeating a Goblin Invasion. Ammo Dealer: You have a gun in your inventory. (Not in a chest, maybe break a Shadow Orb/Crimson Heart) Painter: Having 8 or more NPC's in your world. Angler: Found in an Ocean, at the edge of the world. Party Girl: having 13 or more NPC's in your world. Hardmode Wizard: Found in the cavern layer. Tax Collector: Sprinkle Purification Powder (From the Dryad) onto a Tortured Soul in the Underworld. Steampunker: One of the Mechanical Bosses (Destroyer,Twins,Skeletron Prime) have been defeated. Cyborg: Plantera is defeated. Santa: The Frost Moon has been defeated. Truffle: Build a Surface Mushroom Biome and make a house there. Pirate: A pirate invasion is defeated. Other Travelling Merchant: Can Appear everyday, as long as two NPC's are in your world, excluding the two below. Old Man: Spawns in World Creation, just to summon Skeletron. Skeleton Merchant: Found Randomly Underground. Note: This may be duplicated from another guide like this.