Here is the full list of all 36 Sonic Origins achievements.
Unlock all Trophies
Defeat 10 Rhinobots in Sonic the Hedgehog 3 & Knuckles
Get the jackpot in Sonic the Hedgehog 2's Casino Night Zone
Play Mirror Mode
Clear Sonic the Hedgehog 3 & Knuckles in either Anniversary or Classic Mode
Clear all 4 titles
Collect 3 types of Shields in Sonic the Hedgehog 3 & Knuckles
Watch the opening for Sonic the Hedgehog 3 & Knuckles
Clear Sonic the Hedgehog 2 in either Anniversary or Classic Mode
Clear 10 Sonic the Hedgehog 3 & Knuckles Missions with an S rank
Defeat 10 Moto Bugs in Sonic the Hedgehog
Turn into Super Sonic
Defeat 10 Stingers in Sonic the Hedgehog 2
Watch the opening for Sonic the Hedgehog 2
Clear Sonic CD in either Anniversary or Classic Mode
Win a race against Metal Sonic in Sonic CD
Clear 10 Sonic the Hedgehog 2 Missions with an S rank
Travel to the past or future in Sonic CD
Unlock 6 movie collection items with Coins
Clear 10 Sonic CD Missions with an S rank
Try the Boss Rush from any of the titles
Unlock 30 art collection items with Coins
View a Premium Collection item from the Museum
Unlock 10 sound collection items with Coins
Collect a total of 1000 Rings
Watch the opening for Sonic CD
Clear Sonic the Hedgehog in either Anniversary or Classic Mode
Fly as Tails
Clear 10 Sonic the Hedgehog Missions with an S rank
Glide as Knuckles
Clear 1 Mission
Defeat a total of 200 enemies
Use Air Bubbles in Sonic the Hedgehog
Defeat 30 enemies with the Spin Dash
Defeat a total of 50 enemies
Watch the opening for Sonic the Hedgehog