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