Here is the full list of all 34 Road Rage trophies - there are 22 bronze, 5 silver, 6 gold and 1 platinum.
Earned all trophies
Hit 1000 pedestrians
Hit 500 pedestrians
Finish all story missions
Collect the Farmlands Collectable
Collect the Forest Collectable
Collect the Ruscago Airfield Collectable
Collect the Port Hamc Collectable
Collect the Downtown Collectable
Collect the Chitaly Collectable
Collect the Subtroit Collectable
Buy 5 bikes
Complete upgrade a bike
Hit 50 pedestrians
Finished a arcade mission
Finish a sprint mission
Buy 5 weapons
Outsmarted the cops in escape
Buy 3 weapons
Buy a new bike
Win your first circuit race
Buy 5 bike parts
Buy 3 bike parts
Buy a bike part
Spend more than 10000
Upgrade a bike
Spend more than 5000
Spend more than 2000
Buy a weapon
Spend your first money
Finish a stunt mission
Win your first eliminator race
Finished a time trail
Hit a pedestrian