Samurai.warriors.5.update.v1.0.0.1.incl.dlc-cod... Today

Navigate to the folder named CODEX within the extracted directory. Copy all contents from this folder and paste them into the main game installation directory, overwriting the existing files.

Extract the files using a tool like 7-Zip and run the setup.exe to install the base game/update. Samurai.Warriors.5.Update.v1.0.0.1.incl.DLC-COD...

The official v1.0.0.1 patch fixes several character-specific issues and gameplay bugs: Navigate to the folder named CODEX within the