Full list of all 12 NBA JAM [Cancelled] achievements worth 200 gamerscore.
Play an online ranked match
Win an online ranked match
Win 10 online ranked matches
Win an online ranked match while leading after each quarter
Win a Classic or Remix game without letting the opposing team score
Go up for a game winning dunk only to have time expire while in mid-air
Score 50% of your team's points while only shooting three pointers
Break the backboard in a Classic or Remix game with an alley oop!
Make 5 layups in a row without getting blocked
Win a game with a layup buzzer beater
Hit a buzzer beater while on fire
Keep yourself or your teammate on fire until it exhausts by making 5 or more unanswered baskets