You don't really "try" Cursed Mode in BO7 Zombies. You earn the right to suffer through it, and the option only shows up after you clear the Ashes of the Damned main quest. If you're just trying to unlock it without burning hours, most players I know run the Directed version on Vandorn Farm because it's quicker and less chaotic. Once you load in, everything feels different, even if you've lived...