[ENG] "The Dark Room" & "Missing Pages" Achievements

How to unlock "The Dark Room" & "Missing Pages" achievements.

The Dark Room

Go to the basement.
There is a large door on the left (you can't miss it).
Click on it and enter this code: 327965

Missing Pages

When you enter the door, you will see 3 pages on the wall.
Just read them.

[vhytom]

It gave hints that the answer was in the stamps, but I looked and couldn't figure it out earlier, then by the time you're in the basement and need the code, it blocks you from viewing the stamps.

[Zernan]

thank you

[Left 4 Sharkbait]

all have heavily differenciated numbers from the rest and are in a unique color, thats how. I luckily figured it out on my own.

[Left 4 Sharkbait]

stamps at the top right

[yogsu]

thx,but how could you know the code?

[Radiance]

Thx!