Minecraft wiki entry for Hardcore_mode, associated text: First find a fortress. Gather the blaze rods that you need, then head off to find some piglins or a bastion. A bastion remnant will be useful for trading with piglins (although you need gold armor), as there are plenty of them and there is tons of gold to be found. Be careful about mining the gold or opening chests around them, though, as they will become angry and try to kill you. (Be especially aware of Piglin Brutes.) After getting all the ender pearls you need, relocate the end portal and return to the Overworld.