So I have never actually even tried to go into Hardmode yet, for the simple reason that I've never truly felt fully prepared for the challenges that await me once I enter the Hardmode World...coupled with nostalgia for my old world, but setting that aside...
What should a player have before they enter Hardmode? How much of the map should be explored before they enact this permanent map change? What essential resources should the player concern themselves with preserving before the transformation?
In short, how should I prepare for Hardmore?
Important Note - I do not need help preparing for the Wall of Flesh. I already know that I need a battle platform stretching the length of Hell and I have the gear to fight it, I am more worried about preparing the entire rest of my world.