You need to have carried out the following tasks to get the corresponding number of Gamerscore points:-
All Stars (50 points) Collected every Star in World Tour.
Arrow Of Light (15 points) Froze an opponent with Ice from at least 100 meters away.
Ax Battler (15 points) Finished a Battle Race without losing any lives.
Battle Outrunner (15 points) Did 5 overtakes in a single Drift.
Blast Processing (15 points) Hit 2 opponents with a single Hot Rod Blast.
Buzz Bomber (10 points) Hit 1st, 2nd and 3rd place with a Swarm attack.
Catcher Pitcher (15 points) Absorbed a weapon with the Glove and fired it back
at your attacker.
Cosmic Smash (10 points) Detonated the Hot Rod at the very last second.
Crack Down (10 points) Got a total of 20 hits with weapons in a Race.
De Rol Le Credits (20 points) Unlocked Superstar Showdown in World Tour.
Drift More (15 points) Got a Perfect Drift score on a Drift Challenge event.
Eyes On The Road (10 points) Hit an opponent with a weapon while looking backwards.
Fighting Viper (10 points) Evaded or Blocked a homing-weapon 3 times in a Race.
Gale Racer (30 points) Got a Podium Finish in every Grand Prix tournament
on Expert difficulty.
Genesis (15 points) Triple-Stunted while transforming into a car or boat.
Hardcore (20 points) Completed a World Tour event on Expert difficulty.
Holosseum (20 points) Unlocked Mirror Grand Prix mode.
House Party Of The Dead (10 points) Completed an event with 4 local friends.
Justice Shot (10 points) Got 10 hits by firing weapons backwards in a single event.
Link Chain (15 points) Completed the Dream Valley Ring Race and passed every
Ring as NiGHTS or Reala.
Lock On Sight (20 points) Scored 90% accuracy with aimed weapons in an event.
Magic Second (15 points) Finished 0.5 seconds ahead of an opponent in a Race.
Mega Jet (15 points) Did a Reckless Boost.
Meteor Strike (15 points) Collected 10 Stars in World Tour.
Newtron (10 points) Played 10 Matchmaking games as a Random character.
Nomad (20 points) Visited every location in the game.
Parts Shop (15 points) Won an event with a Mod equipped.
Race Leader (15 points) Won a Matchmaking game.
Racing Hero (30 points) Got a Podium Finish in every Grand Prix tournament.
Racing Transformed (15 points) Turned All-Star.
Rank A (20 points) Earned your A Class License.
Rank B (10 points) Earned your B Class License.
Rank S (30 points) Earned your S Class License.
Scud Racer (15 points) Finished 1st in a Race without getting hit by weapons.
SEGA All Star (50 points) Earned your Star License.
SEGA Super Star (100 points) Earned your Triple-Star License.
Shadow Step (15 points) Did 10 Stunt Combos in a single event.
Sonic Drift (10 points) Did a 10 second Drift as Sonic.
Spin Dash (10 points) Did a Boost-Start in each vehicle mode.
SUMO Wrestled (10 points) Beat your first Staff Ghost in Time Attack.
Takes AGES (30 points) Unlocked every Character in the game.
Team Sonic (10 points) Finished 1st, 2nd, 3rd and 4th with local friends in
a 10 player Race.
The King Of Speed (20 points) Finished 1st in a Grand Prix tournament at Expert difficulty.
Tornado (10 points) Did a Level 3 Air-Drift.
Virtua Trickster (15 points) Rolled Left, Rolled Right, Back-flipped, Forward Flipped and landed
as a car or boat.
Vyse The Legend (15 points) Beat 01:11.16 in Time Attack as Vyse in Rogue's Landing.
Welcome To The Fantasy Zone (15 points) Finished 1st in a Grand Prix tournament.
Welcome To Victory Lane (50 points) Finished 1st in every Grand Prix tournament on Expert difficulty.
Yokozuna (50 points) Beat all the Staff Ghosts in Time Attack.
You Got The Horn (15 points) Levelled-up a character.