NBA Playgrounds is more or less a spam game. This is a cumulative achievement that you will obtain while going for
Dunk are performed by Holding
and pressing
while running at the basket.
Notes to keep in mind:
1. You need at least 50% of your stamina bar to perform a dunk (It will be a layup if you have insufficient stamina)
2. Your dunk skill should be higher then the defenders blocking ability.
3. Alley-Oops do not count towards this achievement. They only count towards
You can't really set this up in Tournament Challenge, but you can certainly choose characters that have a 9 or 10 Dunk stat to make it easier.