Here is the full list of all 34 Sonic's Ultimate Genesis Collection achievements worth 1,000 gamerscore.
Kid Chameleon: Collect Maniaxe
Alien Storm: Reach Mission 3 without losing a life
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Golden Axe: Collect 20 magic power-ups
Shinobi III: Complete first level without using continues
Sonic 3: Collect 100 rings with Tails anywhere on Angel Island Zone
Sonic The Hedgehog: Obtain a Chaos Emerald
Streets of Rage 3: Unlock Roo the Kangaroo as a playable character
Golden Axe III: Use magic 10 times
VectorMan 2: Reach Scene 11
Ecco: The Tides of Time: Eat 200 fish
Ecco: Talk to another dolphin
Comix Zone: Complete first episode
Columns: Get 20,000 points only on Easy Mode
Bonanza Brothers: Reach 40,000 points on the first level
Beyond Oasis: Unlock the Water Spirit
Altered Beast: Collect 100,000 pts or higher by the end of the first level
Alex Kidd: Collect 1,000 in currency
Decap Attack: Collect 5 Bonus Coins
E-SWAT: Obtain the Combat Suit (Complete Mission 2)
Fatal Labyrinth: Progress to the fifth level of the labyrinth
Flicky: Collect 80,000 points
Golden Axe II: Complete Tower Level
Ristar: Collect 5 Yellow Stars
Dr. Robotnik's M.B.M.: Complete the game
Sonic 3D Blast: Rescue 20 Flickies.
Sonic Spinball: Get 10,000,000 points in the first level
Super Thunder Blade: Score over 1,500,000 points in the first level
Streets of Rage: Complete 1st Level using all 3 characters
VectorMan: Collect 500 photons
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