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