Here is the full list of all 47 Need for Speed: Most Wanted trophies - there are 35 bronze, 9 silver, 2 gold and 1 platinum.
Awarded for successfully collecting all Most Wanted trophies
Finish first in every race, in every car (Single Player)
Break through every Security Gate
Smash every Billboard
Unlock all the Pro mods on a car (Single Player)
Drive over 5 spike strips with re-inflates equipped
Trigger every Speed Camera
Find every Jack Spot
Unlock 3 Pro Mods in Multiplayer
Play a Custom Speedlist you have created (Multiplayer)
Drive every Car
Trigger a speed camera at over 200mph (321.97km/h)
Get 5 or more NFS friends
Escape from the cops in the Marussia B2
Wreck 10 cops in a single pursuit in the Ford F-150 SVT Raptor
Escape successfully from all Heat levels
Takedown 50 Cops
Shut down Most Wanted car number 1: Koenigsegg Agera R (Single Player)
Own all the Most Wanted cars (Single Player)
Escape the cops with at least one blown tire
Shut down Most Wanted car number 2: Pagani Huayra (Single Player)
Shut down Most Wanted car number 3: Bugatti Veyron Super Sport (Single Player)
Jump over 200 yards (182.88 meters) through a Billboard
Shut down Most Wanted car number 4: Lamborghini Aventador (Single Player)
Customize your license plate and number in Multiplayer
Takedown every racer at least once in a single race
Takedown a friend in Multiplayer
Shut down Most Wanted car number 5: Porsche 918 Spyder Concept (Single Player)
Shut down Most Wanted car number 6: McLaren MP4-12C (Single Player)
Shut down Most Wanted car number 7: Lexus LFA (Single Player)
Smash a friend’s face on a billboard and beat their jump distance
Shut down Most Wanted car number 8: Mercedes-Benz SL 65 AMG (Single Player)
Shut down Most Wanted car number 9: Shelby COBRA 427® (Single Player)
Unlock a mod for a car in Multiplayer
Get Busted for the first time
Use a Billboard and a Jack Spot to successfully evade a pursuit (Single Player)
Shut down Most Wanted car number 10: Alfa Romeo 4C Concept (Single Player)
Use a Jack Spot in a Pursuit (Single Player)
Repair a burst tire at a Bodyshop
Smash through a roadblock without crashing
Drive through a roadblock without hitting it
Takedown your first Cop
Move up the Most Wanted List for the first time
Beat a friend’s Autolog Recommendation
Do a 250 yard (228.6 meter) drift
Empty a full nitrous bar without hitting anything
Use a Bodyshop to paint or repair your car for the first time