Currently the game (demo) has 16 achievements. Until a few days ago, there was only one. Do they work? Or will they work in the future?

please add them.

I cleared the Extra Stage 1-9, but i couldn't get the "Welcome to Dum" achievement. I tried this stage again, but I couldn't get it. Is it bugged? Extra Stage 1-9를 클리어했는데 "Welcome to Dum" 도전과제를 얻지 못했습니다. 다시 한번 스테이지를 클리어해보았으나 결과는 똑같았어요ㅠㅠ 혹시 버그인걸까요?...

I have finished all levels with 3 orbs but i can't seem to get 1 achievement. Does anyone know how to unlock these achievement? - Welcome to Dum (yes I have finished all levels in Chapter 1's Extra Levels) - Get egg! (read CAPERS ' hint below ) thanks in advance!...

I didn't find a parameter to change the language, is there is a way to change it somewhere ? The French translation is kinda cringe and I would love to play in English which is probably far better.