Here is the full list of all 19 ColorBlend FX: Desaturation Prologue achievements.
Complete the tutorial
Reach the Library
What's an adventurer without a map?
Solve that glass puzzle at the forest
Reach the S.P.A.R.K. University
Obtain the Spring Shoes
Collect 800 Slime Essence
Jump from the roof!
Name him in a special way!
Discover a secret area in the Forest
Obtain the golden bowl at the Forest
Take all golden coins (except the first three in the forest)
Prematurely save Squishy from his sufferings
Read the Ashen Book in the Library
Craft the screwdriver
Complete the Prologue
Complete the prologue without dying more then three times
Complete the Library
Investigate the vents in S.P.A.R.K.