The Gilly Island Add-on for Super Lucky's Tale has 14 achievements worth 325 gamerscore.
Must... destroy... sandcastles!
Defeat General Buttons and Mr. FluffinStuff in Three Cannon Salute
Successfully complete Stuck In Paradise
Successfully rescue the Soggy Boggy Boys’ Audience
Defeat Lady Meowmalade in her dance club
Collect All Diamonds in Secure The Talent
Look at every map in Stuck In Paradise
Beat Stuck in Paradise without flipping a switch and without dying
Defeat Lady Meow Without Getting Hit
Complete all the Sliding Block Puzzles in Gilly Island
Collect Every Clover in the Gilly Island
Defeat the Yeti in Secure The Talent
Take no damage at the end of Three Cannon Salute
Activate all the Cash Registers