Like the other bosses of the game, Oxide gets easier as more attempts are made, this case in the Ballistix part. But how about beating him in the first try, with maximum difficulty?
This video shows the complete level, and here I leave a link to a previous attempt that originally was not intended to be uploaded, so I did not record the first part:
https://www.youtube.com/watch?v=FXwy3l6OOoY
Just to note that I am not the first one to ever record it:
https://www.youtube.com/watch?v=9LHr2f6Tino