Jusant

The easiest solution for this achievement is finding a choco (the little rat looking things) and following it back to its burrow (they automatically go straight to it once you get close enough to them). Once inside just walk away from the door and after a few moments you'll see him pop back out. Wait until he's at the bottom of the ramp and walk toward him to scare him back in it again. Repeat until achievement pops. This strategy will only take about 2 minutes to complete and if you're lucky like I was you'll stumble into 2-3 of them at a time and it speeds it up even more.

You can do this in chapter 2 after you are prompted you can interact with your companion. The chocos are the brown creatures. Scare them back into their borrow and then wait for them to come back outside. Do it again until you reach 10.

For a fast and full guide check the link below:


Timestamps:

00:00 Intro
00:35 Ch1: Letter 1/57 + First Contact Achievement
02:20 Ch1: Shell 1/12 + An ear to the past Achievement
02:49 Ch1: Letters 2-8/57 + Rockpiles 1,2/20 + First stone Achievement
06:45 Ch2: Fresco 1/12 + Echo from the past Achievement
07:44 Ch2: Rockpile 2/20 + Angel’s carabiner Achievement
08:37 Ch2: Shell 2/12 + Rockpile 3/20 + Letters 9,10/57 + Adventure buddies, Bogeychoco and Restored connection Achievements
11:32 Ch2: Letters 11-13/57 + Altar 1/4 + Back in motion Achievement
12:13 Ch2: Letters 14-16/57+ Rockpiles 5,6/20 + Frescos 2,3/12 + Shell 3/12
15:30 Ch3: Letters 17-20/57 + Rockpiles 7,8/20 + Fresco 4/12 + Shell 4/12
20:07 Ch3: Letters 21-26/57 + Rockpiles 9,10/20 + Altar 2/4 + Shell 5/12 + Collective Climb Achievement
24:58 Ch3: Letters 27-35/57 + Rockpiles 11-13/20 + Frescos 5,6/12 + Shell 6/12 + Fresh Air and Acrobat Achievements
31:50 Ch4: Letters 36-43/57 + Rockpiles 14/20 + Shell 7/20 + Frescos 7,8/12
37:15 Ch4: Letters 44-52/57 + Rockpiles 15-18 /20 + Shells 8,9/12 + Alter 3/4 + Fresco 9/12
45:27 Ch5: Letters 53-55/57 + Rockpile 19/20 + Shells 10,11 /12 + Frescos 10,11/12 + Avid reader Achievement
49:18 Ch5: Letters 56,57/57 + Fresco 12/12 + Final ascent and Antique gallery manager Achievements
50:28 Ch5: Shell 12/12 + Altar 4/4 + Rockpile 20/20 + Sound archeologist, Cycle celebration and Common ground Achievements
53:50 Ch6: A faint glimmer, Awakened memory, and Water piper Achievements
57:32 Angel’s carabiner Achievement
57:57 Adventure buddies, Bogeychoco, and Restored connection Achievements
58:37 Collective Climb Achievement
58:52 Fresh Air and Acrobat Achievements
59:11 A faint glimmer Achievement
59:20 Awakened memory Achievement