Hi there,
Someone came onto our Discord server to signal that the achievements were still broken so I took another look and found the issue. Basically some code got lost at some point and so the achievement conditions were not checked properly. So I rewrote the missing code and from my testing I'm fairly certain it should work as intended for everyone now!
Cheers, thanks for still playing this game a full year after it came out! <3
-Rémy @ PUNKCAKE Délicieux 🥞