Here is the full list of all 23 de Blob achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox One.
Master De Blob in all possible ways
Run to defeat the time.
What a style!
Paint everything... e-ve-ry-thing!
They may take away our colour, but they'll never take our freedom!
Earn 30 gold medals.
Prepare the billboard.
Optimus paint engine.
To blimp and beyond!
Decorate all trees.
Shake! Shake! Shake!
Defeat'em all.
Get all gold medals in story mode.
Defeat INKT Corporation.
Save Ministry of Ink from INKT Corporation.
Save Chroma City Fun Park from INKT Corporation.
Save Hanging Gardens from INKT Corporation.
Save the Docklands from INKT Corporation.
Save Guggentraz Island from INKT Corporation.
Save the Chroma Dam from INKT Corporation.
Save Downtown from INKT Corporation.
Save Uptown from INKT Corporation
Save Last Resort from INKT Corporation.