Here is the full list of all 105 Spyro Reignited Trilogy achievements worth 3,000 gamerscore.
Aquaria Towers: Destroy every Roboshark
Ocean Speedway: Flame all of the audience members
Hurricos: Defeat every robot in the level
Twilight Harbor: Destroy 6 gears in Twilight Harbor
Gnasty Gnorc: Have Gnasty Gnorc run 5 laps around his level
Gnorc Cove: Complete the Gnorc Cove without killing any Rats
Colossus: Charge a Goat
Summer Forest: Complete Hunter's challenge
Haunted Towers: Defeat all Tin Soldiers
Lofty Castle: Charge through four Puffer Birds in a row
Dark Passage: Defeat three Demon Dogs while in large form
Dream Weavers: Charge through three Armored Fools in a row
Metal Head: Collect 500 gems in the level
Tree Tops: Jump off every Supercharge ramp in Tree Tops.
Misty Bog: Free a trapped Chicken
Beast Makers Home: Flame 5 Glowing Mushrooms in Beast Makers
Terrace Village: Light 3 Fireworks within 15 seconds
Blowhard: Collect 400 gems in the level
Wizard Peak: Defeat the hidden Egg Thief
Crystal Flight: Flame all of the Direction Fairies
High Caves: Defeat all the Metalback Spiders
Alpine Ridge: Detonate the three explosive chests on the pillars
Magic Crafters: Charge through the four Armored Druids in a row near the level start
Ice Cavern: Defeat all three Skiing Gnorcs
Dr. Shemp: Unlock the Strong Chest
Cliff Town: Flame every Vulture in the level
Peace Keepers: Use a cannon to dispatch a taunting Gnorc
Dry Canyon: Charge a Vulture
Take a trip with a Balloonist.
Toasty: Defeat Toasty without getting hit by him
Town Square: Glide to the upper area where the Blue Egg Thief is
Sunny Flight: Do a Loop de Loop around one of the arches
Dark Hollow: Light the two bonfires
Stone Hill: Flame 10 Sheep
Artisans Home: Found the hidden entrance to Sunny Flight.
Night Flight: Flame all of the Direction Fairies
Complete Wild Flight without touching the ground
Icy Flight: Never land on the ground
Jacques: Defeat four Nightmare Beasts in one glide
Gnasty's World: Unlock Gnasty's Loot
Gnasty's Loot: Collect all gems in the level
Glimmer: Light 6 gem lamps in 15 seconds
Idol Springs: Do not feed the Hungry Idol any red fish
Sunny Beach: Headbutt every turtle in Turtle Soup challenges
Crush's Dungeon: Complete the level without flaming or charging any Fodder
Autumn Plains: Complete the long glide to Orb in Autumn Plains
Crystal Glacier: Defeat all of the Draclets during one Superflight
Skelos Badlands: Don't take damage from the lava
Zephyr: Use a cannon to defeat a TNT thrower
Breeze Harbor: Don't crash the trolley
Scorch: Don't get hit by Bob
Fracture Hills: Defeat every Earthshaper in the level
Magma Cone: Steal a Popcorn Crystal from Hunter
Shady Oasis: Don't take any damage from the hazardous water
Gulp's Overlook: Complete the level without flaming or charging any Fodder
Icy Speedway: Defeat all the Snowmobiles before defeating a Hang Glider
Metro Speedway: Flame all of the Pigeons first
Winter Tundra: Headbash every rock in the map
Mystic Marsh: Charge through every Striped Monkey
Cloud Temples: Don't flame or charge any Sheep in this level
Metropolis: Defeat the Ox without getting hit
Robotica Farms: Defeat every Robo Bee with a spit object
Ripto's Arena: Use all three of the Power Ups that are dropped
Canyon Speedway: Defeat 5 Buggies while charging
Dragon Shores: Unlock the permanent Super Flame
Sunrise Spring: Free Sheila the Kangaroo
Sunrise Spring: Launch the Transporter Balloon
Sunny Villa: Defeat all the Coward Rhynocs in the level
Cloud Spires: Glide for 5+ seconds (and land safely!)
Molten Crater: Unlock the locked treasure chest
Seashell Shore: Defeat Bluto's nuclear shark submarine
Sheila's Alp: As Sheila, destroy all headbash treasure chests
Mushroom Speedway: Fly Through 4 Star Speed Boosts In One Lap
Buzz's Dungeon: Defeat Buzz
Crawdad Farm: Defeat the Crawdad King
Midday Gardens: Free Sgt. James Byrd
Midday Gardens: Launch the Transporter Whirligig
Icy Peak: Destroy 6 icy things using the cannons
Enchanted Towers: Destroy all the balloons
Spooky Swamp: Defeat Sleepyhead
Bamboo Terrace: Follow the question mark bottles to the end
Sgt. Byrd's Base: As Sgt. Byrd, bomb all treasure chests
Country Speedway: Fire 5 missiles in one race
Spike's Arena: Defeat Spike
Spider Town: As Sparx, defeat the Spider King
Evening Lake: Free Bentley the Yeti
Evening Lake: Launch the Transporter Rocket
Lost Fleet: Use cannons to shoot down all vultures
Frozen Altars: Use ice breath to freeze 12 enemies
Fireworks Factory: Defeat Twin Dragons
Charmed Ridge: Defeat a giant
Bentley's Outpost: As Bentley, destroy all the totem poles
Honey Speedway: Fly through 12 star speed boosts in one race
Scorch's Pit: Defeat Scorch
Starfish Reef: As Sparx, defeat the Manta Ray
Midnight Mountain: Free Agent 9
Midnight Mountain: Get revenge on Moneybags
Crystal Islands: Defeat all the Crystal Bears
Desert Ruins: Find both butterfly jars
Haunted Tomb: Destroy All Sarcophagi
Dino Mines: As Agent 9, defeat an enemy with a ricochet shot
Agent 9's Lab: As Agent 9, shoot down all the balloons
Harbor Speedway: Find Hunter
Sorceress's Lair: Defeat The Sorceress
Bugbot Factory: As Sparx, defeat the Metapede