Here is a 100% walkthrough with all achievements explanation for Milk outside a bag of milk outside a bag of milk.
“First death”, “Please, forget it”, “Second death”
1) Choose “That’s the thing. I have no idea. This is weird.” (After you ask what she was thinking while lying on the floor) and do as usual.
“First death” complete
2) Once you press on the laptop she give a small story about it. At some point you will be given two options. You have to press the second one (“You’ll end up returning to that subject anyway”.)
“Please, forget it” complete
3) After all this, make her go to the balcony. (if there was no first death, the achievement will not be given to you)
“Second death” complete
“You’re annoying”
2) Once she finishes explaining what happened on the last day you’ll have the option to ask her again.
3)Once shes finishes for a second time you’ll again have the option to ask her. You eventually get the achievment if you continue asking her.
“Goodnight”
(Complete 1 of 5 endings)
Translates like “Control yourself” one of Delphic maxims
“Is anyone there?”
I use: Laptop (with story), Pills, Bag, Note. Jump from Balcony.
“I look down”
I use: Laptop (without story), Pills, Note. Without Balcony.
“Everything is fine”
“Are we friends?”
I use: laptop (without story), Pills, Note, Dead green on shelf, Secret. Without Balcony.
“You won’t get it”
I use: laptop (without story), Pills, Note. Balcony (without jump).
P.S.
Code it is how many fireflies you need to catch and how many times interact with farniture without any of them.
Example of “Code”: 4 + 1 – X
4 – fireflies
1 – without fireflies
0 – no balcony scene, X – balcony scene without death, V – second death (“Second death” achievement).
How I tested – first dead not count, but recomend to do it without first death scene. Order is not important, and you can change the backpack (bag) for a notebook or a notebook for pills.
Interesting notes:
XD
(Yellow markers – ferniture with fireflies)
for what this stuff? Cuted boxes? Why OST is 4 hours?
I spent 5 hours looking for all the “codes”.
There are many of them and they depend on what.
But I found all the endings by brute force.
Thanks to DANC0 for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.