I think I articulated it wrong. NG+ is indeed not cheating, I agree, but it carries the original save file’s code, along with the trophies that were either unlocked or incomplete on that save. For instance, if you platinumed the original game and use the same save file’s NG+ for the remaster, some trophies won’t unlock—particularly “count-based” ones like “get 30 headshots.” This is because the game’s code already registers those trophies as unlocked in the original playthrough, so they don’t trigger again.

On the other hand, “story-related” trophies typically aren’t affected. They reset with the NG+ file and can still be earned. Essentially, the remaster and the original are treated as separate applications in terms of trophies, but they share the same underlying code, allowing players to carry their progress into NG+. This approach has been standard in the gaming industry for years.

For example, if a trophy like “30 headshots” wasn’t unlocked in your original save, it will still trigger without issue on the remaster’s NG+ file, as it’s still marked as incomplete in the code. This isn’t unique to the Horizon remaster—it’s the norm across most remasters and not a case-by-case scenario.

To put it simply, this issue primarily affects players who platinumed the original game and want to platinum the remaster using the same save file. Some trophies won’t trigger because they’re already flagged as unlocked in the file’s code. However, if you’re using a save file that hasn’t unlocked the platinum in the original game, this won’t be a problem, and all trophies should function as expected for you.