Successfully complete one of the following tasks to get a trophy:

1 of a kind (Bronze): Build an ATV from scratch in the garage.
5 in a row (Gold): Come first in 5 online events in row.
Comeback kid (Silver): Come from last place on the last lap to win a race event in World Tour Mode.
Completed stage 1 (Bronze): Place first in all four events in Stage 1.
Completed stage 10 (Bronze): Place first in all seven events in Stage 10.
Completed stage 2 (Bronze): Place first in all four events in Stage 2.
Completed stage 3 (Bronze): Place first in all four events in Stage 3.
Completed stage 4 (Bronze): Place first in all four events in Stage 4.
Completed stage 5 (Bronze): Place first in all five events in Stage 5.
Completed stage 6 (Bronze): Place first in all five events in Stage 6.
Completed stage 7 (Bronze): Place first in all five events in Stage 7.
Completed stage 8 (Bronze): Place first in all six events in Stage 8.
Completed stage 9 (Bronze): Place first in all six events in Stage 9.
Finished an event (Bronze): Complete an event.
Flawless event (Bronze): Complete a World Tour event without dismounting.
Flawless lap (Bronze): Complete a lap of a Race event in World Tour without dismounting.
Freestyler (Silver): Extend a Freestyle session past the third lap.
Fresh air (Silver): Win a Freestyle event with Fresh tricks only.
Full speed ahead (Bronze): Hold down the gas for the entire event and finish in the first place.
Fully loaded (Bronze): Unlock and then fill all ten ATV slots in the garage.
Grease monkey (Silver): Earn a 1st place with every engine type in World Tour Mode.
Hang time (Bronze): Spending 150+ seconds in the air and win the same event.
Killer combo! (Gold): Perform a combo of at least 250,000 points.
Learner driver (Bronze): Lap another rider in offline sprint track event.
Mechanic (Bronze): Build five ATVs, each with a different engine.
Nice combo! (Bronze): Perform a combo of at least 50,000 points.
No messing (Silver): Complete World Tour Mode while participating in a maximum of 42 events.
No pain, no gain (Bronze): Crash ten times and still win an event.
Online champ (Silver): Come first in a online championship.
Pure perfection (Gold): Come first in every event in the Pure World Tour.
Pure platinum (Platinum): Acquire all Pure trophies.
Show off (Bronze): Win a Race of Sprint event and cross the line while doing a Wheelie on every
Sick combo! (Silver): Perform a combo of at least 125,000 points.
Specialised (Silver): Perform 8 different special tricks in a single World Tour event.
Tricked out (Silver): Perform every normal trick in a single World Tour event.
Triple flip (Silver): Pull of a 1080 forward or backward rotation in a single jump.
Two time! (Silver): Perform two special tricks in 1 jump.
Underdog (Silver): Use a class D engine to beat an opponent with a class A engine in a ranked match.
Win online (Bronze): Come first in an online event.
You reckon? (Bronze): Pull a special trick on a sprint track.
You're special! (Silver): Perform every special trick in the game.
Zero to hero (Silver): Acquire a special trick within 30 secs of a Race starting.