Achievement not working

[Matdad]

Hey,
I finished this game the 22nd of august, but didn't get the achievement. I've sinced tried replaying the last chapter, shifting the language (which was in english/american already though, as well as in the steam menu), but nothing seems to be working. Is there anybody who knows how to fix this? Thanks in advance!

I really enjoyed the game, very sweet.

[Kaga_san]

Hey there, I finished this game last night and yeah I too couldn't unlock the achievement even after replaying the last chapter.

Also irrelevant here but maybe it might help someone else, the game couldn't run in the foreground (only in the bg) when I first installed even after reinstalling it and managed it fix it by trying the "alternative" option under the beta tab

[Momekato]

I had the achivement already 4 years ago and i got delete dont know why