Here is the full list of all 12 The Ball Adventure achievements.
Overcome the first obstacle.
Find the demon for the first time.
Kill an enemy with a friendly turret.
Learn to control jumps perfectly.
Don't be late for your flight.
Eliminate the 5 crystals.
Earn all 5 stars at level 1
Earn all 5 stars at level 2
Earn all 5 stars at level 3
Earn all 5 stars at level 4
Earn all 5 stars at level 5
Die cut by a sharp object