If you are looking for legitimate ways to play or customize your build:
: Suggests the date of the build (September 29, 2021).
To "generate a piece" or successfully use this file, you must have (e.g., part01 through part05 and any subsequent parts) in the same folder. Opening any single part (typically starting with part01) will allow your extraction software to "stitch" them back together into the full game folder.
: This is the 6th part of a multi-part RAR archive.
: You can enhance your experience with Steam Workshop mods like "Just Let Me Build You!" which lets you fully respec companions the moment they join. Are you trying to extract this specific file, or
: Since the game is classless, you can customize your character by focusing on specific attributes and combat skills regardless of your starting "class".