Here is the full list of all 30 Spyro 2: Ripto's Rage! trophies - there are 12 bronze, 12 silver, 5 gold and 1 platinum.
Collect all trophies in Spyro 2: Ripto's Rage
Defeat every Robo Bee by spitting
Defeat the Ox without taking a hit
Don't hit any Sheep in Cloud Temples
Charge through every Monkey in Mystic Marsh
Steal a Popcorn Crystal from Hunter
Defeat all Draclets in one Superflight
Flame the Pigeons first in Metro Speedway
Defeat the Snowmobiles before defeating a Hang Glider
Complete Gulp's Overlook without harming fodder
Unlock the permanent Super Flame
Use all 3 types of power-ups in Ripto's Arena
Defeat every Earthshaper in Fracture Hills
Charge a Goat in Colossus
Defeat 5 Buggies while charging
Headbash every rock in Winter Tundra
Heat up the audience
Don't touch the hazardous water in Shady Oasis
Don't get hit by Bob
Clean run in the trolley
Use a cannon to defeat a TNT thrower
Don't touch the lava in Skelos Badlands
Headbutt every turtle in Turtle Soup challenges
Complete the long glide to Orb in Autumn Plains
Complete Crush's Dungeon without hitting any fodder
Destroy every Roboshark
Defeat every robot in Hurricos
Do not feed the Hungry Idol any red fish
Complete Hunter's challenge
Light 6 Gem Lamps in 15 seconds