Download archive, extract folder anywhere
9Rota.exe launches the game

download the game [drive.google.com]

Run the game once, you may watch the intro or just Alt+F4 and watch it later

Open C\Users\<Username>\Documents\My Games\Truth about 9th company
Open Settings.cfg

1. Edit first line, for Full HD: Screen(1920, 1080, 32, False);
False sets it to borderless windowed mode, True to fullscreen

2. Right click on Settings.cfg>properties — set it to READ ONLY

If you have 2560x1440 screen setting such resolution may not work, it gives me black screen so you will probably need to set your screen resolution to 1920x1080 (don't forget to reset refresh rate)

If you play on laptop or have windows scaling option on you will need to set scaling back to 100%, right click on desktop>display settings>scale

If you want to open all information blocks and levels in the game
open C\Users\<Username>\Documents\My Games\Truth about 9th company
Replace data.txt with this file [drive.google.com]