Here is the full list of all 42 Half Past Fate achievements.
Examine the B.B. Bunny plush toy in each chapter
Talk to (sentient?) plant life in 4 different chapters
As Jaren, exchange "Space Knights" player IDs with 3 different characters
Listen to the history buff in 4 different chapters
Listen to the cell phone guy in 4 different chapters
(Ch. 1) Find 4 red herrings for getting change
(Ch. 1) Return the coffee creamer
(Ch. 1) Find another use for the coffee creamer
(Ch. 2) Use the Tea Festival Brochure on the Tea Festival Sign
(Ch. 2) Get all dialogues asking Jaren about himself
(Ch. 2) Visit all tea booths solo as Ana
(Ch. 3) Find an inanimate object to play catch with the ball
(Ch. 3) Throw the ball for peanut 5 times
(Ch. 4) Get all the Taco Truck orders correct
(Ch. 4) Return the borrowed glasses to the girl
(Ch. 4) Get all dialogues eavesdropping on the couple talking in GamerForge
(Ch. 5) Diagnose the issue with the printer
(Ch. 6) Have a zesty burrito ready immediately for the sleepy cashier
(Ch. 7) Win the spicy ramen challenge
(Ch. 7) Find something special just out of view
(Ch. 7) Get Jaren to speculate on the purpose of a building
(Ch. 8) Save everyone else's appetite
(Ch. 10) Throw out Stacie's things
(Ch. 9) Answer the art teacher's question correctly
(Ch. 9) Give the cool drifter the drink he wants
(Ch. 10) Talk to each NPC about the Q-tips incident
(Ch. 11) Annoy the gardener repeatedly with an irritating question
(Ch. 11) Give the correct directions to the hipster
(Ch. 12) Offer a confusingly-named food to the Hippie, Jaren, and History Buff
(Ch. 12) Have Mara and Rinden use the tower viewer
Complete chapter 1
Complete chapter 2
Complete chapter 3
Complete chapter 4
Complete chapter 5
Complete chapter 6
Complete chapter 7
Complete chapter 8
Complete chapter 9
Complete chapter 10
Complete chapter 11
Complete chapter 12