Start game -> move right -> move left -> don't press anything after you fall -> achievement
For a fast achievements guide check the link below:
Timestamps:
00:00 Intro + Chapter 1: Denial and Red Achievements + Memento 1/28
02:12 Chapter 2 Part 1: Memento 2/28
02:39 Chapter 2 Part 2: Sandstorm and Anger Achievements + Mementos 3-5/28
06:14 Chapter 2 Part 3: Inuksuit and Green Achievements + Mementos 6-8/28
10:36 Chapter 3 Part 1: Apples + Mementos 9,10/28
15:52 Chapter 3 Part 2: Bargaining + Blue Achievements + Mementos 11-14/28
20:39 Chapter 3 Part 3: Memento 15/28
21:51 Chapter 4 Part 1: Memento 16/28
23:22 Chapter 4 Part 2: Depression, Yellow and Eel Achievements + Mementos 17-19/28
29:18 Chapter 4 Part 3: Memento 20/28
30:47 Chapter 5 Part 1: Mementos 21,22/28
32:48 Chapter 5 Part 2: Memento 23/28
35:51 Chapter 5 Part 3: Magic fowls Achievement + Mementos 24-27/28
41:17 Chapter 6: Mementos (Memento 28/28Mementos), Childhood, Acceptance, The End Achievement
