Basically, you’ll unlock these achievements by completing the game. You can use the Table of Contents to see your progress.


Avid Reader
You have read all the pages in Chapter 2.


Complete genealogy
You have completed Chapter 2.

Ole!
A muy caliente dance!

On the cupboard level, after pulling the lever once there is a purple box labelled ‘DESSINONS LE STYLE’. Interact with this box and there is a mini game where you mix and match clothing. To get the achievement, put Emelie in the flamenco style dress.


Lone Horse

The fate of a horse...
After pulling the lever twice, on the top shelf there is a yellow box labelled ‘JEU DE L’OIE’. Click on the brown box above it and a small horse piece should appear. Keep interacting with the box and more horses should appear. After the fourth horse, they should start racing each other. The achievement should unlock.


Sorry
You really struggled with the fifteen puzzle game... We are so sorry for this...

On the same shelf section as the Ole achievement, there is a slide puzzle next to the matryoshka doll. Simply complete this puzzle.

I suspected that there was a minimum amount of moves needed to get the achievement but I wasn't 100% sure as I got this achievement naturally due to me being bad that these puzzles. Thanks to Nightlily for suggesting that you need to make a minimum of 30 moves to get the achievement. So if you don't get the achievement your first time, perhaps restart and make sure to make at least 30 moves.


Check Mate
You're the kind of person who mixes up the game pieces...

On the same shelf section as the Lone Horse achievement, interact with the red box above the Trivial Pursuit box to reveal battleship pieces. Pick up one of the battleships and place it on the box on the same shelf labelled ‘BOSS MIND’.

Amateur geologist
You have been the author of various experiments.

I believe to get this achievement you need to fill a jar on the first page of the research book with black rocks but to be safe I’ve explained how to get all four of the rocks in this section.
-Green Rock: Interact with the piece of paper with ‘NOUVEL-’ on it.
-Gold Rock: Interact with the drawn box/tomb and the rock will be inside.
-Black Rock and Crystal: After the smoking scene, the volcano on the page should erupt. Use the trowel on the volcano.
Take the sun from the from the corner of the second page and hold it over the rocks. The green rock should glow, the gold rock should shine, the crystal should produce a rainbow and the black rock should explode into pieces.
Interact with the paper on the top left of the book and a jar should be revealed. Pick up all five of the black rock pieces and put them in the jar.


Diversion
You unexpectedly broke up an argument.

On the right page, align the planets so Mercury, Earth and Jupiter appear diagonally like in the picture below. Play through the scenes and you should end up on a scene with Emelie, Alice, and Manon. Simply interact with the light switch.



An eventful journey
You have travelled through adversity.

After lining all the planets in a row, there should be a scene with Alice on a plane. I think you might have to interact with everything in the scene so open all 3 windows, put on the neck pillow, open the overhead locker, and use the paper bag. There’s also a overhead light and magazines to interact with but I don’t believe they’re necessary.

A little hungry
You have not been very sharing...

In the bottom right scene at the bar, you need to interact with most items in the scene. At the top there is a bowl full of olives, use the cocktail stick on the table to eat every olive. Drink every drink (see Thirst for Completion achievement) and then turn over both the coaster with the phone number and the tissue with the lipstick (underneath the one you use to clean up the drink).

Thank you to Nightlily for figuring out this achievement!


The doooooor!
You have not shown the greatest ecological awareness...

In the scene where you’re cooking dinner, just leave the fridge door open and eventually the achievement should unlock.


Whiter than white
You put your mark on everything you could get your hands on.

In the top right scene with a crying Isa, pick up the tip-ex and interact with the rose image on the floor, lava lamp, Isa’s bag, and Christian’s trousers (both legs).


Outdated
You have helped to degrade what was already falling apart.

In the top right scene, just interact with objects in the scene to make them fall apart. I’m not 100% sure what counts but I interacted with the radiators, bin, chalkboards, lights, exit lights, and speakers. The image below is what my room looked like afterwards.



Thirst for completion
You didn't have to drink them ALL!

In the bottom right scene in the bar, just keep drinking. You should drink 3 beers, 1 whiskey, 3 shots and another beer and the achievement should unlock.

And there you have all of the achievements!