Originally Posted by BiggD
Numero Uno 20
GTA Online: Obtain first place in all competitive game types.
There are several game types that you will encounter during your time on GTA Online. Some are available from the start of the game, while others are only unlocked when you have reached a certain Rank. Do not worry about obtaining each of these wins in a public match against other players, however. You can work on all of these in a Closed Friends Session so long as you have the required amount of players for each game type. Most game types only require two players, while others will require four. Below, you can find a list of all the game types you must win in order to get this achievement.
Rally Race (FOUR players required)
10 Waves of Survival (FOUR players recommended)
Gang Attack (Can be done Solo)
Golf (Can be set to 1 Hole)
Tennis (Can be set to 1 Set)
Any challenge at the Shooting Range
If for whatever reason you lose track of your progress for this achievement, you can check where you have already gained victories by following these steps: PAUSE > STATS > AWARDS > VICTORIES.
Does winning as a co-driver counts for the achievement? Or you need to win as a driver too.