There are 34 achievements worth a total of 1000 points
Dr. Robotnik's M.B.M.: Complete the game.
Play all Genesis™ Titles.
Unlock Everything.
Watch Every Video.
View all Artwork.
Play all Arcade Titles.
VectorMan: Collect 500 photons.
VectorMan 2: Reach Scene 11.
Golden Axe II: Complete Tower Level.
Kid Chameleon: Collect Maniaxe.
Sonic 3: Collect 100 rings with Tails anywhere on Angel Island Zone.
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.
Ristar: Collect 5 Yellow Stars.
Shinobi III: Complete first level without using continues.
Sonic The Hedgehog: Obtain a Chaos Emerald.
Sonic Spinball: Get 10,000,000 points in the first level.
Alex Kidd: Collect 1,000 in currency.
Alien Storm: Reach Mission 3 without losing a life.
Flicky: Collect 80,000 points.
Beyond Oasis: Unlock the Water Spirit.
Bonanza Brothers: Reach 40,000 points on the first level.
Comix Zone: Complete first episode.
Ecco: The Tides of Time: Eat 200 fish.
Golden Axe: Collect 20 magic power-ups.
Golden Axe III: Use magic 10 times.
Streets of Rage: Complete 1st Level using all 3 characters.
Columns: Get 20,000 points only on Easy Mode.
Sonic 3D Blast: Rescue 20 Flickies.
Super Thunder Blade: Score over 1,500,000 points in the first level.
Streets of Rage 3: Unlock Roo the Kangaroo as a playable character.
Altered Beast: Collect 100,000 pts or higher by the end of the first level.
Ecco: Talk to another dolphin.