"She is my sin" success didn't unlock properly

[Ninita]

From what I understand, it's supposed to unlok when you beat the 2nd boss in the three fights you do for the "World Flower" ending.

Steam tells me that I unlocked it (but does not give me the "Afterimage" success) but the in-game menu tells me that I don't have it.

Am I missing something ?

[Ninita]

Well, I've just re-lauched the game to replay the final bosses gauntlet in case it would work this time and the Steam notice for "Afterimage" popped when the title screen opened.

I loaded my final save to check and both "She is my sin" and "Afterimage" are unlocked in the in-game menu, too.

Go figure.

[Aegis Runestone]

Yeah. This happened to me with the "Dreams" Achievement on Switch. I actually did the Dreams Ending twice, I heard the Achievement chime, it was still faded, but when I reloaded the game the next day, the Achievement had lit up.