Warning: this achievement may be glitched. I just completed every single venue, all games, and I didn't get the achievement. I don't think you have to complete all objectives but if anyone is having trouble popping this, let me know.
UPDATE: As of the 4/19/19 patch, this achievement now can be obtained again! I had already previously done all the games, so I just took my level 99 character to the final game at the Rucker, won the game, and the achievement popped at the end of the match. I did have all 3 bonus objectives completed as well, but I'm not sure they're even necessary. But yeah, its no longer unobtainable.