NGYR
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I started playing and encountered a game-breaking bug that prevents me from finishing the storyline. If you don't complete the main storyline and defeat the second-to-last boss (who is simply located at the end of a cave, near the portal in Shadowrise), no one will talk to you in Cauldre, which prevents you from obtaining the Wings of Blessing and the Blade of Destruction. This is caused by the parameter 'Netherim_is_dead' remaining at 0.
I discovered the bug using the editor because I didn't understand what was required of me.