Here is the full list of all 33 Double achievements.
Kill 30 enemies by shooting from cover
Answer right all questions about dreams in day 1
Get bad ending
Complete day 9
Complete day 8
Don't uncover Lucia's lies
Complete day 7
Hide pills 5 times
30 headshots
Complete day 6
Complete day 5
Complete day 4
Trust Louis
Complete day 3
Complete day 2
Kill 15 without aiming
Complete day 1
Skip 10 dialogs
Kill an enemy with a dash while having a minimum of lucidness
Die of glitch
Die from waiting
Open all letters in dreams
Answer right all questions about dreams
Answer wrong all questions about dreams
Explore all things at the hospital
Take 4 pills
Complete the game without upgrades
Кill 40 enemies with dash
Kill 15 frozen enemies
Kill 15 enemies using focus
Get good ending
Uncover Lucia's lies
Do not help Louis in the shootout