Extra Life
Ultra rare0.2%ObjectiveOptionalAnywhere
Die as a hardcore character and survive to tell the tale.
Hardcore characters normally die once and become a ghost, full stop - the loophole is the seed combo: a world whose seed layers celebrationmk10 with the constant revives a dying hardcore character (at a steep HP cost) instead of deleting them. Make a throwaway hardcore character, generate the combo world, die on purpose, survive to tell the tale. Daft, obscure, quick once you know the trick.