The Grand Grid II

Question

Have a look at the first Grand Grid to get an idea of the basic concept

Each Grand Grid involves you discovering clues that allow you to solve a logic grid puzzle. The second in this series will be just like the first, except not at all, because this time the clues are entirely obscured in the Runescape map.

I won't be able to provide transcripts this time as part of the challenge is working out what the actual text is.

The image gets scaled down on this site. You will need to view the image in hi-res here.

Here is an album of images with the map split into 32 sections

There are six clues to find. I expect that this will require a group effort.

Join the Grand Grid chat to discuss it.

Due to @Annosz's fantastic progress and thinking that the script used for both of the last clues is harder to find the official version of than I intended (and if you don't have them it becomes very difficult indeed), I have decided to redo them in English:

Fourth Clue (As ordered by @Annosz)

FLTTHEMILHHSPERRERAUAAEIEFZBXLRETZCIEGMELDSAAOREEWSMNTGFIEETHAG

Fifth Clue (As ordered by @Annosz)

ACBBBBCBCDCBACABABCACBBCAAACABCDCAABCBACAACBCDCBBCBBBCDCABBBCBCBBCABCAABCDCABBCBCBBBACBCBABBCAAACBAABCBCABBCDCABBBCABAACDCBAABCBACBABCBACABBCAAACABBA

By the way

The script was Liron. I couldn't remember what it was at the time of posting the above transliterations so did the cipher again with a different key. https://www.omniglot.com/conscripts/liron.php

Answer 1

The six hint are highlighted in this image:

This can be extracted by getting the differences of Joshua's and the original Runescape map.

First hint:

Left-down corner, in the sea



This is a simple rot17 cypher, which hides the following message (with spaces added):

FIVE GAME DEVELOPERS ARE EACH DEVELOPING A PC GAME THEY AGREED TO FOCUSON DIFFERENT GENRES AND RELEASE THEIR GAMES ON DIFFERENT MONTHS THE DEVELOPERS ARE PARADOX BETHESDA KONAMI ROCKSTAR AND FIRAXIS THE MONTHS ARE APRIL TO AUGUST THE GENRES ARE ACTION STRATEGY PUZZLE SIMULATION AND ROLEPLAYING THE ROLEPLAYING GAME WILL BE RELEASED THREE MONTHS BEFORE THE PARADOX GAME

Second hint:

Letters at the Shamans region:



This is written with Daedric alphabet, and translates to the following (with spaces added):
THE ROLEPLAYING GAME IS NOT BEING DEVELOPED BY KINAMI

Third hint:

Letters at the Prifddinas region:



I don't know the alphabet here, but from the previous hint I suspected that the word 'developed' will be present. I searched for the pattern, and when I fount it, I started replacing letters and backtracking. The decoded message (with spaces added) is:
THE PUZZLE GAME IS EITHER THE ONE THAT IS BEING RELEASED IN MAY OR IS BEING DEVELOPED BY BETHESDA

Fourth hint - solved by @Jens

Letters on the mountain:



@Joshua Bizley gave the following translation:
FLTTHEMILHHSPERRERAUAAEIEFZBXLRETZCIEGMELDSAAOREEWSMNTGFIEETHAG
And by @Jens's work we found that if we take every 7th letter we get the following message:
FIRAXIS WILL RELEASE THEIR GAME THREE MONTHS AFTER THE PUZZLE GAME ABCDEFG

Fifth hint: - solved by @Jens

Letters near Ice Path:



@Joshua Bizley gave the following translation:
ACBBBBCBCDCBACABABCACBBCAAACABCDCAABCBACAACBCDCBBCBBBCDCABBBCBCBBCABCAABCDCABBCBCBBBACBCBABBCAAACBAABCBCABBCDCABBBCABAACDCBAABCBACBABCBACABBCAAACABBA
And @Jens found the solution (the method is written in his answer, make sure upvote it too!)
THE ACTION GAME IS BEING DEVELOPED BY PARADOX

Sixth hint:

The names of some places has been replaced/expanded. This gives us the following list:
Esp Cove, Mp Pass, Cpwpidpo River, Htww (Outpost), Rlxp Jungle, Dtxfwletzy Hills, Ty Tower, Ufwj Village

If you put these names in alphabetical order by their suffix / area name, you get the following text:
EspDtxfwletzyRlxpHtwwMpCpwpidpoTyUfwj

Which is a ROT for the following question:
The simulation game will be released in july

The final solution and the logic grid is the following:

Answer 2

I've solved the fifth hint, but it's a bit long for a comment:

The cipher is
ACBBBBCBCDCBACABABCACBBCAAACABCDCAABCBACAACBCDCBBCBBBCDCABBBCBCBBCABCAABCDCABBCBCBBBACBCBABBCAAACBAABCBCABBCDCABBBCABAACDCBAABCBACBABCBACABBCAAACABBA

If the D's are spaces between words, and the C's are separators between letters, we get
A-BBBB-B BA-ABAB-A-BB-AAA-AB AAB-BA-AA-B BB-BBB ABBB-B-BB-AB-AAB ABB-B-BBBA-B-BABB-AAA-BAAB-B-ABB ABBB-ABAA BAAB-BA-BAB-BA-ABB-AAA-ABBA

I assumed the word GAME was somewhere in the message and since there was only one four-letter word (AAB-BA-AA-B), that must be it. Some more trial and error gives the following clear text:

THE ACTION GAME IS BEING DEVELOPED BY PARADOX

One viable solution to the logic grid occurs if we guess that

Bethesda is releasing in June. But I haven't checked if other solutions are possible. Perhaps a last clue is needed? I'll let @Annosz wrap up the puzzle since he did the vast majority of the work! :).

EDIT

The last comment above is wrong. There is only one solution. I leave it to you, @Annosz. :)