Here is the full list of all 19 BallBastic! achievements.
Roll for 10 hours and unlock the Pearl.
Roll for 100 hours and unlock the Soccer Ball.
Get 100 lives and unlock the Star Ball.
Find every warp goal and unlock the Time Bomb.
Beat every level at least once and unlock Randomizer Mode.
Complete Expert difficulty and unlock the Globe.
Get a hole-in-one on Golf and unlock the Golf Ball.
Complete Journeyman difficulty and unlock the Tennis Ball.
Complete Survival Mode on a single life and obtain the Rainbow Ball.
Complete Marathon difficulty and unlock Mars.
Complete Novice difficulty and unlock the Baseball.
Complete Randomizer and unlock the Mirror.
Have good RNG and unlock the Roulette Ball.
Complete the Trampoline Trials and unlock the Energy Ball.
Handle fruit well and unlock the Watermelon.
Beat the developer's score and unlock the Moon.
Unlock every ball type, then marvel at your collection.