Here is the full list of all 14 Doodle Adventure of Chameleon achievements.
First use of color changing ability
Collect 30 apples
Collect 80 apples
Collect 120 apples
Completion of the [Illustrated] chapter
Completion of the [Blackboard] chapter
Completion of the [Wall Painting] chapter
Complete the [Game Console] chapter
Completing the [Forgotten Picture Book] chapter
Achieve 100 points in [FlyChameleon]
Achieve 500 points in [OnlyDown]
Achieve 1000 points in [Up]
Complete the [Forgotten Picture Book] chapter entirely in the world of darkness.
Erase all the eye monsters in a single game session