Here is the full list of all 10 Chook Sosig: Walk the Plank achievements.
You got the previously haunted treasure
Became the new sea deity
You showed everyone the parrot, even if they didn't want to see him.
You upvoted Hebble's photo
You found all the hidden images
Listened to all tracks on the radio.
You almost wiped an entire island off the map.
Set all burnables on fire
You spotted the kakapo!
You met Clive the fish.