Here is the full list of all 9 Your Future Self achievements.
Reach the end of chapter 1.
Reach the end of chapter 2.
Reach the end of chapter 3.
Reach the end of chapter 4.
Reach the end of chapter 5.
Discovered the fate of the impatient rebel.
Annoy them enough to shut the loop down early.
Complete the game without helper mode.
Complete the game without ever failing in conversation.