A.ku.mu.: Receive a "Jet" ranking at Fortified Residential Zone.

Beat: Beat (no pun) him in a street race.

Boogie: Find her at Kibogaoka Hill.

Clutch: Follow DJ Professor K's instructions.

Combo: Complete his challenges.

Cube: Beat the Noise Tanks At Sky-Dinosaurian Square, go to the very bottom of the Sewage Facility and beat Cube in the City Rush.

Doom Riders: Receive a "Jet" ranking at Dogenzaka Hill.

Garam: Complete his challenges.

Goji Rokkaku: Receive a "Jet" ranking at Rokkaku-Dai Heights.

Immortals: Receive a "Jet" ranking in Skyscraper District and Pharaoh Park.

Jazz: Travel to the future site of Rokkaku Expo Stadium. Beat Jazz at City Rush

Love Shockers: Receive a "Jet" ranking at Hikage Street.

Noise Tank: Receive a "Jet" ranking at Highway Zero.

NT-3000: Receive a "Jet" ranking at Sky-Dinosaurium Square.

Poison Jam: Receive a "Jet" rank in a test run at the Tokyo Underground Sewage Facility and at the very bottom of Sewage Facility.

Potts: Receive a "Jet" rank at Kibogaoka Hill.

Rapid 99: Receive a "Jet" rank at 99th Street.

Rhyth: Climb to the of the Poison Jam warehouse in Rokkaku-dai Heights to spot her the first time. Follow her and you'll have to find her twice more in the game to get her.

RoBoy: Receive a "Jet" rank at Chou Street.

Soda: Beat Soda in City Rush at Highway Zero.

Suga: Pick up 32 spray cans at Chuo Street, after that leap off of the dinosaur. Suga will be found near the bottom of the stairs.

Zero Beat: Receive a "Jet" rank in a test run at Shibuya Terminal.

Complete the entire game in less than 10 hours.