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