Here is the full list of all 29 Grand Theft Auto III trophies - there are 11 bronze, 12 silver, 5 gold and 1 platinum.
Unlock all trophies.
Blow up 2,000 cars.
Get busted 20 times.
Complete "The Exchange".
Achieve 100% completion.
Complete "Patriot Playground", "A Ride in the Park", "Multi-Story Mayhem", and "Gripped!" missions.
Complete the Portland Docks and Shoreside Vale import/export car lists.
Earn a criminal rating of 5,000 or higher.
Complete every RC Toyz mission.
Destroy five helicopters.
Deliver all emergency vehicles to the crane at the Portland Docks.
Collect 100 hidden packages.
Complete 20 unique jumps.
Pass all 20 Rampages.
Earn a criminal rating of 2,500.
Complete "A Drop in the Ocean".
Waste 1,000 people.
Complete the "Kingdom Come" mission.
Kill 20 criminals during one Vigilante mission.
Amass a fortune of $1,000,000.
Perform a perfect insane stunt.
Waste 100 gang members.
Complete "Last Requests".
Complete the "Turismo" race in under 180 seconds.
Crush a car at the junkyard.
Extinguish 20 fires during a single Fire Truck mission.
Complete Paramedic level 12.
Complete 100 taxi fares.
Complete "Luigi's Girls".