Here is the full list of all 13 Cyrano Story achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Finish the game on Halloween
Feeling nostalgic
Type 50 wrong answers
Finish the game 7 times
A distressing experience
Finish the game in 79 seconds
Habitual sleeplessness
You have chosen poorly
Securing The Future and Improving The Present
Paranormal language skills
Auditory hallucination
A state of intense joy
Irrational suspicion