All they need is like a triathlon while stoned out of his mind and a fight in a hospital to make that the "official" Nick Diaz game. Perhaps he could steal someone's bike for the biking part of the event and just go buck naked for the swimming part. He's Nick Diaz and he doesn't give a daaaaamn.
They got the walk down perfect, that was pretty impressive. It's like the game developers had him in mind when they were making the walking styles.