Hardcore

Hardcore mode is for those who want a challenge. Or maybe you just beat the game and want to do it again without dying.

Deaths
You do not get the privilege of dying in hardcore mode. Dying will kill you permanently, unless you can get a friend to revive your body before you lose your pulse. After you do eventually die permanently, you will be sent back to character generation, though you will keep all effective experience (jobs, journals, etc.) up until your last save.

Saving
You can save experience you earn at any clone bank.

Experience
All experience earned from killing enemies will be doubled. However, jobs, journals, kill journals, achievements, travels, and likewise will not be. Experience, jobs, journals, etc. can also be cleared using the big red button in the Hall of Kings.