Here is the full list of all 30 Jak X: Combat Racing trophies - there are 8 bronze, 17 silver, 4 gold and 1 platinum.
Unlock all trophies.
Unlock all helmets.
Purchase 50% of all Engine upgrades.
Purchase 50% of all Gearbox upgrades.
Purchase 50% of all Armor upgrades.
Purchase 50% of all Turbo upgrades.
Unlock all reels.
View the Hot Coffee reel.
Unlock all Wheels.
Unlock Hero Mode.
Collect all Gold Medals in the Yellow Eco Cup.
Reach 100 kills in a Death Race, in Adventure mode.
Unlock the Naughty Dog.
Unlock the Sand Shark.
Unlock all antennas.
Collect all Gold Medals in the Blue Eco Cup.
Reach 150 kills in Rush Hour, in Adventure mode.
Unlock the Havoc V12.
Capture 5 power cells before the opposing team captures any, in an Adventure mode Capture event.
Unlock the Boomer.
Collect all Gold Medals in the Green Eco Cup.
Unlock the Roadhog.
Earn 4 kills in a Circuit race without dying once.
Unlock the Firebat.
Collect all Gold Medals in the Red Eco Cup.
Unlock the Howler 99.
Unlock the Dragonfly.
Win a race in Adventure Mode.
Earn Gold in any event.
Drift 600 meters or more.