Wasteland notes

The coded notes are a series of notes found in a small underground shelter in Wasteland.

They are found taped all over a wall, arranged vaguely like a pair of wings. Below the table next to the wall is a white Mörkö mask model with a "dirty" skin.

Zuntti said we have to use everything we know already for this.
There is T.50=P which doesn't fit into the key table, but 0x50 is the ASCII code for P. It could also mean that the "truth" is incomplete can be further expanded.

The hint

On 15/01/2018 at 14:18 UTC, Zuntti posted this image in the #spoilers channel of the INFRA discord server. The image's filename is "Truth.png".

Image of the coded notes found in the Wasteland map, with heavy red colour correction applied.

Brightened image.

In both images, the green text "COR_ORD_1_BOD_MES_2_COM_QUE_3_CON_ANS_4_WAS_?_5_PAT_?" can be seen.

On the first image, the text "1. BUN_BREAKER_CEN_CONTROL_VI_OFFICE_RE_SNW" can be seen, and on the second image, the text "4. What are you looking for? The right Question? The right Answer? The Right person?" can be seen.

Clues

Main transcription (PLEASE use a widescreen application so the text doesn't get shoved to other lines) using the following 🔑 encoding table (unreferenced characters are marked bold):

               1         2         3         4
      1234567890123456789012345678901234567890
A is "OTHERSIDE"          |         |           (Answer)
R is "ALBERTHARTMAN"      |         |           (Right person)
Q is "WHATCONNECTSALLTHESE"         |           (Question)
T is "IFYOUKNOWITJUSTSAYITTHENYOUGETITREDRAVEN" (Truth)

Before decoding:

A.1 Q.4 A.3 A.9 A.5 A.6 A.7 A.8 A.9 Q.7 Q.6 Q.16 A.1 Q.4 A.3 A.9 A.5 Q.1 Q.6 A.5 Q.14 A.8	YOU CAN R.7 R.4 R.8 R.9 R.6 R.7 R.4 R.11 R.3 R.5 R.4 R.8 R.6 R.7 A.7 R.13 T.28 WHERE THEY DIED	R.5 R.12 T.38 R.4 R.13 T.2 A.1 T.13 T.24 A.8 A.7 A.2	Q.1 Q.17 T.3 Q.12 Q.6 R.11 R.12 R.13 T.18 Q.5 Q.13 Q.8 Q.16 T.2 T.31 T.7 A.8 Q.3 Q.1 Q.3 T.25 Q.6 T.13 Q.11 Q.4 Q.6 Q.11 Q.2 Q.9 SURFACE	EVERYONE Q.2 Q.9 A.5 A.4 A.7 Q.7 A.6 A.2 Q.3 Q.14 R.3 T.27 R.5 T.28 T.28 T.23 T.30 R.7 A.4 A.5 A.4	T.19 T.15 T.9 T.17 R.13 T.20 T.14 T.20 T.4 T.6 T.29 T.23 T.50 T.18 T.26 T.5 T.13 T.24 A.8 T.25 T.36 T.28 R.5 T.8 T.5 T.7 A.8
T.28 T.22 T.4 T.14 T.11 Q.1 Q.6 A.5 Q.14 A.8 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10 Q.11 Q.20 T.35 A.2 A.1 A.2 A.3 A.4 WRONG WORLD	Q.1 Q.17 Q.20 Q.7 T.25 Q.6 T.13 A.8 A.7 A.9 YOU CAN'T GET OUT	EVERY WORLD HAS OWN LAWS THEY JUST HAVE TO BE CORRECT ONES	T.9 T.22 T.19 T.11 T.29 R.11 T.17 T.16 T.6 T.14 T.20 T.22 T.23 T.18 T.6 T.24 T.8 T.9 Q.4 A.3 A.7 A.6 PLACE	GOD OF UNDERGROUND KEEPS EVERYONE HERE	(symbol)
T.28 A.1 A.8 SUFFERS A.7 A.6 A.7 A.2 A.8 A.4 Q.3 A.8	WHAT HAPPENED IN A.1 A.2 A.3 A.9 A.5 A.6 A.7 A.8 A.9 WAS IT ALWAYS LIKE THIS	THEY ARE Q.13 Q.14 Q.15 Q.14 Q.6 Q.12 Q.11 STUCK IN THAT R.3 R.2 R.12 Q.5 T.6 Q.1 Q.6 A.5 A.8	A.8 A.7 A.8 R.6 R.7 R.1 R.10 R.3 A.1 R.11 R.3 A.8 R.4 A.6 R.10 R.5 A.1 T.18 EVERYTHING	(symbol)	THE PLACE OUTSIDE THE WORLDS
THE BORDER OF THE CHAOS IT IS THIS WORLD	A.3 A.1 Q.1 R.11 T.17 R.13 T.25 T.11 T.10 R.11 R.4 T.14 T.25 A.1 T.5 R.7 R.12 T.36 R.4 A.6 A.9 A.9 Q.3 A.2 A.3 A.7 A.6 R.3 R.2 R.12 Q.5 T.6 Q.1 Q.6 A.5 Q.14 A.8	(symbol)	WITHOUT THE CORRECT LAWS NOTHING STAYS TOGETHER	THE MACHINE Q.5 Q.3 T.27 Q.12 Q.9 Q.19 A.7 A.2 A.2 A.3 A.9 T.3 A.8 A.1 Q.7 A.2 T.6 Q.7 Q.6 Q.1 A.7 A.2	A.7 A.6 A.2 T.22 A.7 A.6 Q.3 Q.14 Q.15 T.12 T.5 Q.12 Q.11 Q.3 Q.14 A.7 A.4
R.5 R.8 T.38 R.4 T.40 Q.1 Q.13 Q.19 Q.17 Q.9 A.5 T.29 THEY TRIED TO HELP	(symbol)	A.8 A.7 T.38 A.7 T.7 T.28 A.6 T.27 A.7 A.2 PROTECTION	T.28 T.26 T.35 T.4 T.2 R.11 T.1 R.13 R.4 R.5 T.14 T.14 R.6 R.12 R.6 T.13 T.39 T.14 T.31 R.13 R.11 T.10 R.13 R.4 T.14	WHEN EVERYTHING IS CORRECT THE NEW WORLD IS BORN	A.2 T.22 A.4 T.18 T.6 Q.7 A.1 T.9 A.3 A.1 Q.1 A.2 A.1 T.28 A.4 A.2 A.3 A.4 A.5 A.9
Q.1 Q.2 Q.3 Q.4 A.7 Q.19 Q.4 Q.2 T.34 A.2 T.33 T.27 A.2 A.3	WHERE EVERYTHING IS BORN THERE ARE NO LAWS	T.21 R.7 R.4 T.18 R.11 T.37 T.35 R.4 A.1 Q.7 T.23 R.11 A.7 T.16 R.6 R.8 T.6 R.4	T.5 R.13 T.35 R.4 R.9 T.28 R.5 T.4 T.27 R.13 T.35 Q.5 T.19 R.6 T.3 TRYING TO GET THEM OUT	(symbol)	YOU CAN GET THERE IF YOU KNOW HOW

After decoding (encoded letters are emphasized):

OTHER SIDE NOT OTHER WORLD	YOU CAN HEAR THEM BREATHING WHERE THEY DIED	RAVEN FOUND IT	WHY SO MANY CANT FIND A WAY OUT TO THE SURFACE	EVERYONE HERE IN STALBURG GO THERE	IT WANTS TO KEEP YOU UNDERGROUND
GHOST WORLD CONNECTED TO THE WRONG WORLD	WHEN YOU DIE YOU CAN'T GET OUT	EVERY WORLD HAS OWN LAWS THEY JUST HAVE TO BE CORRECT ONES	WHITE MASKS THEY KNOW THIS PLACE	GOD OF UNDERGROUND KEEPS EVERYONE HERE	(symbol)
GOD SUFFERS IS IT DEAD	WHAT HAPPENED IN OTHERSIDE WAS IT ALWAYS LIKE THIS	THEY ARE ALL LOST STUCK IN THAT BLACK WORD	DID THAT BOMB DESTROY EVERYTHING	(symbol) Possibly related to the Painting in the Bunker Computer Room	THE PLACE OUTSIDE THE WORLDS
THE BORDER OF THE CHAOS IT IS THIS WORLD	HOW MANY TIMES YOU HAVE SEEN THIS BLACK WORLD	(symbol) Possibly related to the second painting in Villa	WITHOUT THE CORRECT LAWS NOTHING STAYS TOGETHER	THE MACHINE CAUSES IT THEY DONT KNOW IT	IS THIS ALL JUST A LIE
RAVEN WAS HERE THEY TRIED TO HELP	(symbol)	DIVING SUIT PROTECTION	GOD OF MINERS STATUES IN MINES	WHEN EVERYTHING IS CORRECT THE NEW WORLD IS BORN	THEY KNOW HOW TO GET HERE
WHAT IS THE TRUTH	WHERE EVERYTHING IS BORN THERE ARE NO LAWS	THEY MADE ONE MISTAKE	UNDERGROUND CITY TRYING TO GET THEM OUT	(symbol)	YOU CAN GET THERE IF YOU KNOW HOW

This is an image of the raw, extracted texture.

This is an image of the model.

Additional Symbols

The map itself has several symbols on the terrain that it that can be seen on the wasteland notes and possibly Elo hideout symbols.
The 'mushroom world' in Open Sewer has a symbol on the ground that is similar to the markings on the notes and the map.
This is an image of the wasteland notes model. Note how they're arranged similar to the "Raven" logo.
The same model with only the decrypted texts.