The Lovely Bunch 10
Get the Lovely Bunch star in Zen Mode
You must hit a minimum of 5 coconuts to receive the star at the end of the round.
Nope, I got the Lucky Bunch star with a 3 coconut combo. It must be your best combo though in order for it to display at the end for the Lucky Bunch star. My advice is to try and not get too many 4+ combos on other fruit (or not hit any at all unless they are 3+ coconuts) if you only want to go for this achievement.