Here is the full list of all 12 fault milestone one achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Replayed Selphine and Ritona’s change scene over 50 times.
Completed fault milestone one in both English and in Japanese.
Completed fault milestone one.
Competed - homeward bound.
Completed - measure of a girl.
Completed - born again shell.
Completed - beyond the line of magic and reason.
Watched child Rune stab Marcos art in the gallery for over 2 consecutive hours in awe.
Completed - spearing the shadow.
Completed - discrepancies.
Completed - rude awakening.
Completed - galvanize!