Starting June 28th, you will no longer be able to log in to a Curse account that was not merged with a Twitch account. If you have not yet merged your Curse account with a Twitch account, please do so here! Otherwise, your account and its content will be inaccessible.
Q. Do you have to play through softcore to unlock hardcore?
JW: Oooh, good question, yes, you will have to play through to a certain point to unlock hardcore mode, I think it's through normal difficulty after you kill the end boss. I'm like 90% sure, so we could change our minds.
Dam you devils advocate!
I'm hoping this "certain point" JW is referring to is the opening cinematic.