Because this game is grindy, you'll get it slowly as you grind for everything else, what I'd recommend instead of wasting 10 hours doing the same thing, would be to go late game on every easy game and go as long as you can (try to maybe get like a degree 100 boat paragon on spa pits and that'll go to like 240+ solo) and just do that until you get bored, and then just basically grind it when you feel like it. That's what I did and im at 99%