I was playing the game across my laptop and Steam Deck making further progress on one over the other and found out the accomplishment page doesn't sync. I had accomplishments unlocked on PC that weren't on the deck and vice versa. I uninstalled and reinstalled the steam deck version to see the whole page wiped. And when I checked the laptop version it still had the earlier accomplishments like beating Devoir and saving the princess done but none of the others I did on the deck. In the end I just erased my save file again and uninstalled on both devices. I'm gonna start a new save exclusively on my laptop and hope that they'll unlock properly. I'm hoping they're not tethered to the steam achievements unlocking since I got quite a few done already now. It's not the biggest issue in the world and it doesn't affect the actual steam achievements from unlocking, but I'm an annoying perfectionist when it comes to 100%'ing games I enjoy and would rather not have chunks of missing in-game achievement pages on my main save file.