Seventy-freaking-two Achievements! Jesus Christ i'm gonna have a field day on this one.
As you can see the game just launched and i'm still collecting up stuff here and there so this is still extremely W.I.P. but i'll get it filled up as soon as i can because i like to add some extra details to each guide i make.

This time i'm currently alone as my Ukraine friend didn't buy the collection yet so if you feel like contributing to the guide, please add me on Steam and talk to me.
Thanks Caoomi for accepting being a contributor

If you need a QUICKER guide, with less images and most direct answers, i recommend catnip's version:

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2257588381

Go into Spring 1964 and finish up all steps required to PLACE THE CUBE INTO THE FIREPLACE. Turns out you don't actually need to FINISH the section to get this achievement, but you'll get this anyway as you progress the story

Get the black cube on Summer 1971 section and put it in the fireplace.

You'll get this as soon as you place the black cube in Fall 1971 section.

You'll get this as soon as you place the BLUE Cube into the fireplace for the Winter 1981 section

As you go into the Spring 1964 section, cycle through the room until you find a window covered with curtains. Open it and then click on Laura to get your achievement.



Tip: As mentioned by Caoomi in the comments. if Laura is not at the window, circle around some rooms and come back and repeat until she's there.

Get on Spring 1964 section (might work on others too as long as the parrot is alive) and cycle through the room to find Harvey's cage, zoom in and keep clicking on him until you get the achievement. Your computer / cellphone might lag due to the ammount of generated feathers. Just back out to go back to normal.

First, just as you finish putting all the juices in their correct places in Winter 1981 and turning on the machine, go back to either Summer or Fall and click on the phone, it will give you a flavor text and this achievement

When you get to Fall 1971 section, there will be a TV in there.

First, press the rectangular green button at the bottom to turn it on, then tune in the code you get from a box in CE: The Lake game.

If you did the achievement The Pentagon from CE: The Lake then you probably noticed a small code on the box that you open. The code is 25641 and you're supposed to tune that in the TV of CE: Seasons

If you did it right you'll instantly see a younger Laura in the screen taking a picture of you.

After you fish the Shrimp and cut it to get the key, you can click it again for a Shrimp Head Use that as bait and you'll end up fishing a corpse, use the Knife on the corpse back to get an Apple and this achievement.

Use the Magnet as bait for the second time, to get this small babyblue color box.

Solve the puzzle, answer is 1422. Every number is mirrored


Thank you AngelLithium for the heads up as this one is technically missable

After you use the Magnet as fishing bait you'll get a key, use it to unlock the lower cupboard on the screen with stacked cupboards to get a Coin and this achievement.

When you get to this screen for the first time, open the cupboard, grab the crowbar and use it on the tiny black-lined border on the wall to the right of the cupboard, you'll get the achievement when you grab The Eye.

As you progress into the story, you'll eventually get a hold of Mold from the glass cupboard in one of the screens. Use it as a bait in the fishing rod to get a Shell. Click on it for the achievement.

Basically you need to have 13 or more items at once

Here are my tips for getting it easily:

1) Remember to grab everything as soon as available.
2) When you get the Fish DON'T PLACE IT IN THE CUTTING BOARD YET
3) And since you won't have the fish "prepped", don't place any of the other items to make the pentagram yet. You're supposed to be a hoarder, keep everything and only use items required to progress story, like baits, keys, fishing rod, etc etc etc.
4) Remember to fish with the Magnet 3 times First you get a key, Second you get the first box, Third you get the secret box
5) Open both boxes with their respective codes:
-- Small Box: 1422
-- Bigger Box: 1487
6) Remember to grab the Magnet back yes you can grab it from the hook and it counts as an item.

I'm unaware to what exactly triggers this achievement, but it's involving this screen and you can get it as soon as the first moment you're in it.

A Corrupted Soul will appear at the window, if you click it, you get the achievement.
Some people told it triggers after you get the apple, some after you get the shell...

For me it triggered when i picked up the note above the very same window.

This could be a random occurence as far as i know

Update.: I played through The lake again and it appeared after i grabbed the magnet, so yeah, it's very random

As you finish up your Mojo as instructed by the paper you found on the top of the window frame, use the Green Gem instead of the blue one to get an alternate ending.

In case you missed, remember to fish with the magnet 3 times to get a bigger box and use the code you got from CE: Seasons on it.

The code is 1487

As you progress story, you'll eventually find a knife, give it to yourself on the mirror and cut your ear, getting the achievement.

As you go inside your ear, and get off by the Gray Door in any possible method, there will be a Gun in your inventory and your reflection will be a corrupted soul. Give it to yourself and shoot yourself to get the White Cube and the achievement.

You'll get this as you finish the painting and paint the middle hexagon as Black and then click on it to grab the Black Cube.

At any point that you're able to go inside your ear, you'll reach a place with two doors. Just open the door on the left and go in to get this achievement.

You'll get this as you finish preparing the Absinthe drink with a cube of sugar as intended for story progression.

After you build the leftmost portait, it will cough up a golden key, open the door and you'll find your friend Paul. Before you close the door, give him the Absinthe that you find under the right pillow on the bed and you'll get the achievement.




Tip: as mentioned by catnip, you can give the hat right away, just make sure you give him the Absinthe before he leaves

Just as you start the game, go to the screen where you see a window, open the window completely and click on the tiny boat man at the bottom.


Thanks catnip for confirming it is missable.

As you get inside the Ear by story progression, there will be a set of two doors, normally you would be supposed to weight things around and generate the code for the door.

But instead, just place the year that Van Gogh was born: 1853 and as you go into the door, open the window if not open yet, you'll see a shadow of the Rusty Lake Hotel, click on it to get the achievement.




The tip about this number is on CE: Case 23, Chapter 1

After you enter the fruit and come back into the box, the Fish will be in a standing position, give him the cigar to get an achievement.

After you go inside the fruit and come back, there will be a nudge on the side of the box, use the Knife to break it open and you'll get that achievement.

As you progress in the story, solve the Domino puzzle.

As you solve the Fruit puzzle and open it, you'll travel inside of it and end back in the same exact box, getting this achievement.

As you finish every single puzzle in the game, you'll face the Corrupted Soul. Just stay there and do nothing and you'll lose, and get this achievement.

As you finally open the box, you'll have only a few seconds to react to the Corrupted Soul. Click on the FLIES in your inventory and shove them on his face, one by one.

He will become a Black Cube and you'll win the game and this achievement.

As you play the melody on the CUP that your Pidgeon friend taught you, instead of dragging down the rope, click on it several times until a feather drops. That's it.

In CE: Theater, while doing the Bad Egg Symphony achievement, you'll run across this song:



If you write them down and go back to CE: Harvey's Box, you can play that melody on the "Comb Harp" and get the achievement.


The notes are C C | D #D G E | D #D C #A | #G #G #G #G

Thanks catnip for the screenshot and TobyRay for the tip and confirmation

As you progress with the Chapter 1 you'll eventually get a code to open the safe and get some evidence. Examine the evidence on your inventory to get the achievement and end Chapter 1.

As soon as you finish every puzzle of Chapter 2, and put the White Cube in the 392 TV Channel, you'll get this acheivement.

You get this as soon as Mr. Crow arrives for you in the end of Chapter 3

End of Chapter 4. As soon as you finish one of the most intense moments in Cube Escape history, you hop into elevator and press the Red Button to salvation, also yearning this achievement.

When you get to the Fish bowl puzzle, normally you'd have to add a fly, use the shrimp to push the fly to the shell, then after it comes out supercharged, you let it fall on the mouth of the fish.

For this acheivement instead, BEFORE YOU DO ANY OF THAT feed the fish regular 3 flies, without backing out the screen and without triggering the normal event.

My favorite way to do this is let each fly calmly land into the fish's belly then use its fin to push the fly to its mouth. do that 2 more times (remember to "turn off" the fin) and you'll get the achievement.

On Chapter 2, as soon as you finish the puzzle regarding the typewriter machine, type in CROW to get this achievement.



The tip came from Chapter 1 on the corner of the newspaper

On Chapter 1 you'll need to focus on a picture of the CE: Arles room to get the the nameplate for a puzzle. If you then click on the window of the picture, you'll get the achievement.

The clue for this one is on CE: Theatre. After Bob goes to the bathroom, click on him and you'll be able to see the code in the mirror for a few seconds.



At pretty much any point during Chapter 2, go to the TV-like machine and input 171 to get a hidden image and this achievement.

Triggers as soon as you open the ceiling door to the attic.

Unlocks as soon as you put the code you saw on the side of the church (from telescope) in the door to the right of the creepy grandma.

As you progress enough with the story, it will start raining and the rightmost window in the attic will show a ray of light, zoom into it, grab your telescope and look at the base of the ray of light, you'll see a knocked down detective and a T-Pose Mr. Owl

FREE HIM

As soon as you put Black Cube in the basement machine, go back to the attic and find the Corrupted Soul holding Harvey (the parrot) and click on it as much as you can. Free the bird and get the achievement.

Once you start HANGING with Laura (i'm sorry) you can randomly click the controls like a spastic mf and you'll get the achievement eventually.

Ugh... as soon as you get to the attic, click on Harvey (the parrot) to make it poop, then click on the poop, find the ladder to go downstairs again and ... feed the poop to the old lady.

All for an achievement.

As soon as you put the Black Cube in the machine in the basement, stuff will escalate quickly and everyone will die. Including the Cow.

Go back to the attic and find the cow head on the floor, click on it until its eye opens, getting you a spook and the achievement.

Get to the Attic and as soon as you finish the Phone conversation with the Detective, you can put 3:25 in the clock, then go back to the screen where the Parrot was. It will be a Crow instead. Click on the Crow to get the achievement.



The tip was from CE: Case 23 as soon as you type "Crow" in the typewritter to get the Dark Wings achievement, a clock also appears, pointing 3:25.

As you give your Mom some Bubblegum, remember to have the Knife selected as you click the ball to pop it and get the achievement.




Tip: As mentioned by catnip, you can use the screwdriver to pop it too, BUT you won't get the achievement.

Put the fly in the mousetrap, go to another screen, come back and there will be a fish caught on it. grab the fish for the achievement.

Triggers as soon as you place the Blue Cube in the wall clock.

After you go back to the past and give the Revolver to your Grandpa, watch him deadshoot the bastard murderer in one clean hit by the heart.

Go to Grandpa to say thanks, he will have his best moment, he saved his whole family with one clear shot, badass grandpa. Get an achievement for celebrating it with him.

As your Grandpa seemingly dies, check his pockets for a paper with a drinking recipe that you can use in CE: Theater

As you start, go to the screen with the Grandpa and zoom in the flags. Normally the solution is arranging them in "4 X 3 = 12"

Instead make it "12 = 4 X 3". You'll get this achievement.
Remember to do this BEFORE GRABBING THE FLAG

At mostly any given moment, go to the kitchen screen, click the window and then the Rabbit shadow.
Goes without saying that you need to do this before his attack event happens

For those who played Rusty Lake Hotel, if you get all perfect dinners + box of cigars (100% gameplay), you get a secret code at the end.



The code is 1894 and if you put it in the Snow globe that's located in the bottom cupboard instead of the usual code you'd normally put to advance the story, you get a secret cutscene about Rusty Lake Hotel and this achievement.

Give that man a drink.

Go to the bar and follow the Screwdriver Cocktail recipe framed there for your convenience. You’ll get the achievement once you mix and serve it.

Give that man another drink.

Solve the puzzle for the act "The Sings" and input the symbols in the cabinet. This will open the left side revealing the recipe for a Harvey Wallbanger.
Once again just mix and serve to get the achievement.

Give that man another drink... again.

After his second drink, Bob will provide you with the missing ingredient for the Bloody Mary.
Again, simply mix and serve to get the achievement.

This one is very easy to miss but you can do it at any moment BEFORE giving Bob the Bloody Mary.

In CE: Birthday, at some point you’ll be able to get Grandpa’s recipe for a Gin Tonic. You were too young back then to give it any use, but now you can!



As with all the others, just mix it and serve.



Don’t forget to give it to Bob, it will give you a clue for another achievement.

After giving Bob the Bloody Mary, you’ll be able to… get inside his head.
Take the left when you can and make sure to click on Laura to unlock the achievement.




Thanks catnip for confirming it's a missable achievement.

You can unlock it during "The Fish and the Parrot" play, right after getting Harvey’s egg.
DON'T BREAK IT just yet, instead give the egg to the fish three times and you’ll have the achievement.

After you give Bob the Bloody Mary, just talk with the “barman” for some deep words and you’ll get the achievement.

Remember the Gin Tonic? Bob sure does!
After he leaves for the bathroom, click on where he was sitting and you’ll see he left a few messages for you on his bar coasters. If you gave him the Gin, he’ll leave an extra one giving you the clue for this achievement.



Very straightforward. Just play BAD EGG on the piano like you did DEAD FACE and Harvey will appear. He’ll give you a taste of his favorite song, an envelope with a score and this achievement.

Triggers right after you solve the puzzle regarding the family tree. Feels like i'm playing Rusty Lake Roots.

Triggers right when you open the Submarine hatch.

Triggers right when you give the Elixir to the diving suit man (Mr. Owl, actually).

You get this at the very end, by getting the Golden shiny cube.

Just as you start, go left a few screens until you find the Dog.
Click on it repeatedly until you get the achievement.

There will be a point in the game where you need to prepare an Elixir and give it to yourself by your reflection in the mirror.

If you do that and then keep clicking on yourself a few times changing between Human and Crow over and over, you'll eventually trigger this achievement.

あ confirmed in the comments that it can still trigger even after giving the elixir to Mr. Owl (diving suit man)

(If the achievement doesn't seem to trigger, just exit the mirror and go back. Try again now and it should unlock)

As you start, go to the right once and click on the cupboard with 3 handles to slide to the right.

After opening you'll be presented with a Spider-hunt minigame.

All you can do is click on a web path to erase it. Each turn you erase one, the spider will cross another.

The trick is to erase paths and don't let the spider reach any of the bugs, not even once.

It's hard to give you guys a precise guide because the spider path can be set random. You need to LEARN how to handle it.

If more people ask i might try to record a video or something, but it's not really that hard.

Basically, do all of them until you reach the book. If no bugs were eaten not even once, you get the acheivement

Really easy to miss, kinda hard to get.

This one is quite the trip. Literally.

First thing you'll need to do is get the submarine moving, and for this you’ll need to pinpoint the location of one of the cubes. For this guide I will be using the White Cube as an example since it’s the first you can get, but you should be able to do this right until before you get to the Golden Cube's location.

You’ll see that inside your very well equipped submarine, you have a radar where you can set coordinates to find the Cubes. Next to this machine there’s a table with clues for where to find the White Cube. The coordinates for that one are X=3, Y=5, D=40.
Once you set those coordinates in the radar, it will point you to the White Cube and you won’t be able to move the arrows until you reach it, but you are free to navigate anywhere you want until you fish your Cube.
Now that we aren’t static, the next step is to use the map to find the coordinates for the Cabin, the Hotel and the Chapel. Please note that even if you try to input these locations into the radar, it will not recognize them as valid since it's only interested in the cubes.
The coordinates are:

The coordinates are:
Cabin: X= 6, Y=6
Hotel: X=6, Y=3
Chapel: X=2, Y=7
(Depth is always 00)

Once you find them, you need to go to each of those places and look through the periscope to find… even more coordinates. Good thing those Cubes aren’t in a rush to get out of the Lake.

The coordinates this time are
Cabin: X=3, Y=9, D=50
Hotel: X=3, Y=4, D=20
Chapel: X=8, Y=1, D=00


You will have to go to those locations where you’ll find clues for, you guessed it, more coordinates! But this will be the last one, promise.
This time around, you’ll have to look through the window where you do the fishing minigame.

Following the Cabin’s coordinates will lead you to a marine monster, thought you can only see its eye. Look closely and you’ll notice the first part of the coordinates, X=11
.

The Hotel’s coordinates will take you to some sort of deep-sea looking fish, and the second part of the puzzle, Y=5


Finally, the Chapel’s numbers will guide you to a leggy fish and the last clue, D=30


If you put all that together you get X=11, Y=5, D=30. Off you go.

As promised, this is the last stop.
When you get there you’ll see a box through the window, and the word RAT written on it.



Now go to the room with the periscope and click on the machine at its right. Notice that you can change the letters here and use it to write the word in the box.
Another box will fall from it, this one asking you to input Dale’s birthday. That’s 18/12/30.



There’s an envelope inside. What could possibly be in there? Your achievement, that’s what!

I'll add a Conclusion when i actually conclude this, lmao