TripleThis Shouldn't have raped your BO2 installation. Just verify integrity of steam files for BO2. When finished, download this torrent which only contains the dlcs. Download it wherever you want, but once its finished, merge it with your bo2 folder and choose your steam BO2 folder in game settings of the launcher and you should be good to go.
Galaxy_Drifterz Its clearly explained in the readme and takes like a minute or less to do all the steps to run pluto. If you need a video tutorial to do that you might as well just stop using your computer.