Here is the full list of all 16 학생들의 공포괴담 終 (Students' horrible stories FIN) achievements.
Clear Daydream difficulty
Shall we go?
Clear Nightmare difficulty
Achieving a common goal
Export all 15 sleeping students.
Do you want to be a corpse? / Yes
Reach 'chapter 6 Elimination' without skipping chase scenes.
Maintain over 6000
Do you have any painful memories?
You are also someone's friend
it's just an event
It's so easy. - Iseru
Reasons for unrepulsion and proficient
May you be happy in the future