However, as I have learned, the game stores which Affinity Chart nodes have been unlocked, via a field known as "Achievement ID". The save editor isn't exactly helpful with how these "Achievements" are stored, or where.
As a result, I opened the NG+ save file with the 010 Editor, and downloaded a binary template from this GitHub. While I can locate where each Blade's Affinity Chart is stored, I still can't find where the Achievements are stored.
I also located this AchievementSet table, but it doesn't at all say where this would be in a save file.
Could someone please assist me?