While tools like DpFileList Generator and CPK Manager exist for simple mod loading, the serves a different purpose. You need it when:

Yes. The same builder usually has an or "Extract" tab. You can open any existing .cpk (like dt80_100E_win.cpk ) and extract all assets to edit them.

: In the DpFileList Generator, ensure you select the correct DLC version that matches your game installation. File Limits