The ultimate challenge of 1.0.0 waited at the edges. At the Dungeon, an Old Man spoke of a curse. When the player challenged him at night, Skeletron descended—a spinning skull and skeletal hands that felt invincible. Deep below, in the literal pits of Hell, the Wall of Flesh didn't exist yet. The Underworld was the end of the line, a place of fire and ash where you mined Hellstone just to say you had the best gear in the game.
The only starting NPC, the Guide provided essential tips and showed players crafting recipes for any material in their inventory.