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

Finished an event (5 points): Complete an event.
Unlocked Stage 2 (5 points): Successfully unlock the 2nd Stage.
Unlocked Stage 3 (5 points): Successfully unlock the 3rd Stage.
Unlocked Stage 4 (5 points): Successfully unlock the 4th Stage.
Unlocked Stage 5 (10 points): Successfully unlock the 5th Stage.
Unlocked Stage 6 (10 points): Successfully unlock the 6th Stage.
Unlocked Stage 7 (10 points): Successfully unlock the 7th Stage.
Unlocked Stage 8 (10 points): Successfully unlock the 8th Stage.
Unlocked Stage 9 (10 points): Successfully unlock the 9th Stage.
Unlocked Stage 10 (10 points): Successfully unlock the 10th Stage.
Completed Stage 1 (10 points): Place first in all four events in Stage 1.
Completed Stage 2 (20 points): Place first in all four events in Stage 2.
Completed Stage 3 (20 points): Place first in all four events in Stage 3.
Completed Stage 4 (20 points): Place first in all four events in Stage 4.
Completed Stage 5 (20 points): Place first in all five events in Stage 5.
Completed Stage 6 (20 points): Place first in all five events in Stage 6.
Completed Stage 7 (20 points): Place first in all five events in Stage 7.
Completed Stage 8 (30 points): Place first in all six events in Stage 8.
Completed Stage 9 (30 points): Place first in all six events in Stage 9.
Completed Stage 10 (50 points): Place first in all seven events in Stage 10.
1 of a kind (5 points): Build an ATV from scratch in the garage.
Fully Loaded (10 points): Unlock and then fill all ten ATV slots in the garage.
Mechanic (10 points): Build five ATVs, each with a different engine.
Flawless Lap (5 points): Complete a lap of a Race event in World Tour without dismounting.
Flawless Event (10 points): Complete a World Tour event without dismounting.
Tricked Out (20 points): Perform every normal trick in a single World Tour event.
Specialised (25 points): Perform 8 different special tricks in a single World Tour event.
Freestyler (30 points): Extend a Freestyle event past the third lap.
Triple Flip (20 points): During an event; pull off a 1080 forward or backward rotation in a single jump.
Nice Combo! (10 points): During an event; perform a combo of at least 50,000 points.
Sick Combo! (20 points): During an event; perform a combo of at least 125,000 points.
Killer Combo! (30 points): During an event; perform a combo of at least 250,000 points.
You're special! (20 points): During an event; perform every special trick in the game.
Pure perfection (100 points): Come first in every event in the Pure World Tour
Grease Monkey (25 points): Earn a 1st place with every engine type in World Tour Mode
Comeback Kid (10 points): Come from last place on the last lap to win a race event in World Tour Mode
Fresh Air (20 points): Win a competitive Freestyle event with Fresh tricks only.
No Messing (25 points): Complete World Tour Mode while participating in a maximum of 42 events
Zero to Hero (20 points): Acquire a special trick within 30 seconds of starting a Race event.
You reckon? (20 points): Pull a special trick during a Sprint event.
Two time! (25 points): Perform two special tricks in one jump.
Hang Time (25 points): Spend 150 seconds in the air and go on to win the event.
Learner Driver (25 points): Lap another rider during an offline Sprint event.
No pain, no gain. (25 points): Crash more than ten times and still win a competitive Race or Sprint event.
Full speed ahead. (25 points): Hold down the accelerator for an entire competitive Race or Sprint event and finish in first place.
Show Off (20 points): Win a Race or Sprint event and crossing the line doing a Wheelie on every lap.
Win Online (10 points): Come first in an online event.
5 in a row (30 points): Come first in 5 online events in a row.
Underdog (30 points): Use a class D engine to beat an opponent with a class A engine in a ranked match
Online Champ (30 points): Come first in a online championship.