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

  Hello, world! (Bronze): In free ride, go from Offshore Shack Camp to Tsunami 
  Reef Camp without resorting to the chopper. 
  Born under a lucky star (Bronze): Win your first Star in career mode. 
  Open your eyes (Bronze): Find and contemplate a Vista Point. 
  Here comes a new challenger! (Bronze): Win a challenge. 
  DIY (Bronze): Create a race using the race editor. 
  Humble Beginnings (Bronze): Win all three Stars on 'Riders on the Storm'. 
  Path to Glory (Bronze): Win all three Stars on 'Twisted Minds'. 
  Under the Limelight (Bronze): Win all three Stars on 'All's Well That Ends 
  Well'. 
  One of each, please! (Bronze): Own at least one vehicle of each type. 
  Hobbyist Collector (Bronze): Own 10 vehicles. 
  Regular Collector (Bronze): Own 40 vehicles. 
  Hobbyist Sightseer (Bronze): Find and contemplate 10 Vista Points. 
  Regular Sightseer (Bronze): Find and contemplate 50 Vista Points. 
  Hobbyist Stargazer (Bronze): Win 40 Stars in career mode. 
  Hobbyist Challenger (Bronze): Win 30 challenges. 
  Hobbyist Painter (Bronze): Collect 50 vehicle liveries. 
  Regular Painter (Bronze): Collect 100 vehicle liveries. 
  Gear lover (Bronze): Win 24 pieces of gear for the pilot in career mode. 
  Gear buff (Bronze): Win 48 pieces of gear for the pilot in career mode. 
  Oil strike (Bronze): Collect your first oil drum. 
  Oil rig (Bronze): Collect 100 oil drums on the field. 
  Black gold tycoon (Bronze): Collect 500 oil drums on the field. 
  A stroll in the park (Bronze): Drive a cumulative total of 62 mi (100 km) in 
  free ride mode. 
  Safari adept (Bronze): Drive a cumulative total of 310 mi (500 km) in free 
  ride mode. 
  Rocket science (Bronze): Travel 80 meters in a single jump. 
  Blind man's buff (Bronze): Finish a career race ranked 1st without GPS. 
  Natural selection (Bronze): Finish 30 online Career races ranked 1st. 
  Underground brotherhood (Bronze): Play and finish 30 online custom races you 
  haven't created. 
  A prophet in his own country (Bronze): Finish ranked 1st on 10 online custom 
  races you HAVE created. 
  Wriggling about (Bronze): Perform 200 tricks (bikes and quads). 
  All your camps belong to us! (Silver): Unlock all 19 camps for great justice! 
  Obsessional Collector (Silver): Own all 74 vehicles. 
  Obsessional Sightseer (Silver): Find and contemplate all 95 Vista Points. 
  Regular Stargazer (Silver): Win 120 Stars in career mode. 
  Regular Challenger (Silver): Win 100 challenges. 
  Obsessional Painter (Silver): Collect 148 vehicle liveries. 
  Gear freak (Silver): Win 72 pieces of gear for the pilot in career mode. 
  Globetrotter (Silver): Drive a cumulative total of 620 mi (1000 km) in free 
  ride mode. 
  'Tis but a scratch! (Silver): Finish a career race ranked 1st without wrecking 
  your ride. 
  Obsessional Stargazer (Gold): Win all 216 Stars in career mode. 
  Obsessional Challenger (Gold): Win all 190 challenges. 
  Platinum (Platinum): Unlock all other trophies. Now, go breathe some fresh 
  air!