Copy the contents of the folder and paste them into the RUS folder, overwriting the existing files. Back up your original files before doing this.
To change the language in from Russian to English on PC, you can use Steam's built-in options, launch commands, or manual file edits. Method 1: Steam Properties (Recommended)
DefaultEngine.ini or DevilGame.ini
It is a common frustration for gamers purchasing or downloading DmC: Devil May Cry —particularly international or region-locked versions—to find the game suddenly locked in Russian. Navigating menus to find the language settings when you cannot read the text is difficult.
If you are running a retail disc key, an offline version, or an alternative build where the Steam interface method doesn't work, the localized language is usually governed by an emulator configuration file located in the game's core directories. Copy the contents of the folder and paste
Double-click it and change the value to en-US or 1033 (English).
The game will look for its Russian files, find English ones, and (hopefully) display the English text. This method is very effective but is the least "correct" from a technical standpoint, which is why it's recommended that you back up your files first. Method 1: Steam Properties (Recommended) DefaultEngine
When you launch the game, you’ll see the main screen with options like: