NBA Street V3

Get RBK Challenge trophy: Finish RBK Challenge Slam Dunk Contest
Get New York trophy: Finish the New York slam dunk contest
Get Legendary Status trophy: Finish the Legendary Status slam dunk contest
Get History Lesson 1 trophy: Finish the History Lesson Part 1 slam dunk contest
Get History Lesson 2 trophy: Finish the History Lesson Part 2 slam dunk contest
Get Future Of Flight trophy: Finish the Future Of Flight slam dunk contest

Unlock all NBA legends, Street legends, Court Creator items, and store items:
Win the Street Challenge mode to earn 50,000 street trick points.
Participate in the tournament on the 10th week on Sunday.

Unlock Dime in Street Challenge mode
Beat Dime's team in the finals of the "Can You Spare A Dime?" tournament

Unlock Phat in Street Challenge mode
Beat Phat's team in the finals of the "Fat Kid on the Block" tournament

Unlock Biggie Littles in Street Challenge mode
Beat Biggies team in the finals of the The Cage torunament at NY

The Beastie Boys:
Purchase for 500 points at the rewards screen.

Easy points in dunk contest:
During the dunk contest, hold L + White + R + A buttons before the
3-point line, then run up just for a second and push B.