It's Hard
Uncommon15.5%StoryOptionalAnywhere
You have unlocked Hard Mode!
Pops with the Wall of Flesh's death (Still Hungry) - hardmode arrives immediately: the Hallow and a fresh strip of evil biome cut diagonal swathes through the world, enemies toughen everywhere, and altar-smashing ore awaits (Begone, Evil!, Extra Shiny!). Nothing to do beyond winning that fight; everything to do afterwards.