Here’s the current Promethean Code transcript on IC. These two missions follow the same transcript up until right at the end where the Heroic version for Hunger Pangs brings us into a new area with some new dialogue referencing Voluspa.
Name: Quest: Promethean Code (Heroic), Hunger Pangs
Heroic Transcript Ending @ 3:10:
Ghost: These cryptosystems follow no logic I understand. Cayde, are you sure this will work on a Guardian?
Cayde-6: Where do you think Bladedancers got their cloaking —
** The platform begins to descend.
Cayde-6: Woah, wh-where are you going?
Ghost: It wasn’t me.
Cayde-6: You cracked the Voluspa protocol? I’ve been trying to get in there for years. How did — [static]
Ghost: We lost them. Well, we may as well have a look around.
** The Guardian explores the mine. Bracus appears alongside multiple Taken.
Ghost: Great. I hope we get some better pants out of this.
** The Guardian defeats Bracus and the Taken.