The achievement triggers have been changed because there is a difference between how certain gaming mechanics manifest between different platforms (i.e. Epic versus Steam) and how they are coded (i.e. an overlap event trigger versus manually triggering an event).
Update Note 11-17-23: Changed Achievement Triggers
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 12735649 · public branch
Steam updated · First observed