Here is the full list of all 13 NBA Playgrounds achievements.
Score 150 three-pointers
Execute 50 alley-oops
Activate 5 Lottery Picks in the same game
Unlock the first 150 players
Win all 6 initial tournaments
Unlock all tournament challenges
Score 100 dunks
Unlock the first 100 players
Reach gold level with one player
Score at the last second
Score from your backcourt without using a lottery pick
Unlock the first 50 players
Win your first game