Here is the full list of all 47 BALAN WONDERWORLD achievements.
Collect all achievements
Collect every costume
Collect every gold Balan statue
Complete Chapter Twelve
Play every mini game in every chapter
Complete Chapter Eleven
Collect fifty costumes
Complete Chapter Ten
Complete Chapter Nine
Complete Chapter Eight
Populate the Isle of Tims with one hundred Tims
Catch a fleeing cast member
Complete Chapter Seven
Complete Chapter Six
Perform on a stage for the first time
Complete Chapter Five
Collect over one thousand drops in a single act
Complete Chapter Four
Collect twenty costumes
Populate the Isle of Tims with thirty Tims
Complete Chapter Three
Collect your first raindrop
Complete Chapter Two
Complete Chapter One
Defeat a Negate-guarding Negati for the first time
Unlock the Tower o' Tims
Feed a drop to a Tim for the first time
Play a round of Balan's Bout for the first time
Defeat a Negati for the first time
Collect your first Balan statue
Don a costume for the first time