Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Beat Bloodhound (10 points): Awarded for beating rival "Bloodhound"
Beat Midnight Cinderella (10 points): Awarded for beating rival "Midnight Cinderella"
Beat Platinum Prince (10 points): Awarded for beating rival "Platinum Prince"
Beat Garnet Dawn (20 points): Awarded for beating rival "Garnet Dawn"
Beat Silent Cassiopeia (20 points): Awarded for beating rival "Silent Cassiopeia"
Beat Azure Sniper (20 points): Awarded for beating rival "Azure Sniper"
Inside C1 Time Attack (40 points): Achievement unlocked by racing the C1 inside within 5'00"000 in Time Attack.
Outside C1Time Attack (40 points): Achievement unlocked by racing the C1 outside within 5'00"000 in Time Attack.
Left Shinkanjo Time Attack (40 points): Achievement unlocked by racing the Shinkanjo counter clockwise within 6'00"000 in Time Attack.
Right Shinkanjo Time Attack (40 points): Achievement unlocked by racing the Shinkanjo clockwise within 6'00"000 in Time Attack.
#3 Shibuya Time Attack (40 points): Achievement unlocked by racing the Shibuya 3 within 3'30"000 in Time Attack.
#4 Shinjuku Time Attack (40 points): Achievement unlocked by racing the Shinjuku 4 within 6'00"000 in Time Attack.
All left Time Attacks (40 points): Achievement unlocked by racing the All counter clockwise within 16'30"000 in Time Attack.
All right Time Attacks (40 points): Achievement unlocked by racing the All clockwise within 16'30"000 in Time Attack.
First Xbox Live Race (10 points): Achievement unlocked by winning an Xbox Live Race.
Win 10 Xbox Live Races (20 points): Achievement unlocked by winning 10 Xbox Live Races.
Win 50 Xbox Live Races (50 points): Achievement unlocked by winning 50 Xbox Live Races.
Win 100 Xbox Live Races (100 points): Achievement unlocked by winning 100 Xbox Live Races.

Additionally, there are nine secret achievements:

Skull Bullet (30 points): Defeat Skull Bullet.
Phantom 9 (50 points): Defeat a Phantom9 member.
Snake Eyes (50 points): Defeat Snake Eyes.
White Charisma (30 points): Defeat White Charisma.
Crimson Devil (30 points): Defeat Crimson Devil.
Melancholy Angel (30 points): Defeat Melancholy Angel.
D3 (30 points): Defeat D3.
King Speed (60 points): Defeat King Speed.
??? (100 points): Defeat ???