Hardmode, as its name suggests, is essentially a more difficult version of the initial world. A world permanently converts to Hardmode after the Wall of Flesh is defeated for the first time, granting players new challenges and much more content to explore.

After defeating the Wall of Flesh, your world will permanently be put into hardmode. Entering hardmode unlocks a plethora of new content, including weapons, tools, armor, bosses, biomes, accessories, and enemies – some of which will appear as “upgraded” versions of pre-hardmode enemies.

Hardmode is a game advancement that is triggered in a world when the Wall of Flesh is defeated for the first time. The change is permanent (unless using third-party tools, ignored in this guide). The beginning of Hardmode is considered to be one of the hardest parts of the game, so this guide will hopefully make it easier for a new player.