Here is the full list of all 100 Out of the Cube achievements.
You got 3 stars in level 01
You completed the level using only orange cubes
You completed the level using only blue cubes
You completed the level using only green cubes
You got 3 stars in level 02
You got 3 stars in level 03
You got 3 stars in level 04
You got 3 stars in level 05
You got 3 stars in level 06
You got 3 stars in level 07
You got 3 stars in level 08
You got 3 stars in level 09
Green Cubes You completed the level using only green cubes
You got 3 stars in level 10
You got 3 stars in level 11
You got 3 stars in level 12
You got 3 stars in level 13
You got 3 stars in level 14
You got 3 stars in level 15
You got 3 stars in level 16
You got 3 stars in level 17
You got 3 stars in level 18
You got 3 stars in level 19
You got 3 stars in level 20
You got 3 stars in level 21
You got 3 stars in level 22
You got 3 stars in level 23
You got 3 stars in level 24
You got 3 stars in level 25