Here is the full list of all 7 The Growth Journey achievements.
Get 7 points for level 7.
Get 7 points for every level, gathering 350 points in total.
Complete level 50.
Unlock Level Pack 5 by collecting 240 points.
Unlock Level Pack 4 by collecting 180 points.
Unlock Level Pack 3 by collecting 120 points.
Unlock Level Pack 2 by collecting 60 points.