Installation:

1.Find your steam folder (right click on the game at Steam -> Properties -> Local files -> Browse... )
1.5.Close the game if opened
2.1.Back up "Club.bank" file (for example, call it "Club.bank-old")
2.2.Insert (replace) the "Club.bank" file into the directory ..\SteamLibrary\steamapps\common\Ready Or Not\ReadyOrNot\Content\FMOD\Desktop
3.Start the game -> start the mission 'Neon Tomb'