Dreamfall Chapters Book I + II + III + IV Gamerip

Can anyone make a gamerip of the game Dreamfall Chapters Book I – IV?

The game runs on Unity engine so I’ve opened .assets files with Unity Assets Explorer by Haoose 1.5, however the sfx files and ambient and music files are having strange file format – .83. So even if I export files with this software I don’t know what to do next with these files.

So I would be grateful if someone could do a gamerip or at least give me some directions into converting them to mp3/ogg/flac etc.