Story related Achievement, cannot be missed. Once you Defeat the X01 Driller H. F. S. in the Temple Mine. gets an achievement "The Bigger They Are"
And Read the all Logs around the statue in the next room for the Quiz. Now, After reading it Fast Travel back to Autumn Residences and then to the First Scholar's HQ. Speak to Hlin and tell her you're ready to take the quiz. (But don't forget you can't speak
) So the funny part starts now...!
I'll add the answers on the Spoiler tag, click on the spoilers to view the Quiz answers.
*** Spoiler - click to reveal ***
For the first question, you can't answer correctly since you're not able to speak. choose anything for the first 2 times, then they'll figure out your problem and gave you choice to answer in sign language.
Quiz Answers:
Question 1: A
Question 2: A
Question 3: B
Question 4: C
Bonus Question: B
Once you completed the quiz and log off, then there will be a short cutscene and after that Achievement will pop for completing Chapter 4!