Here is the full list of all 12 Pirate Pop Plus achievements.
Cannonball made from solid gold (yeah right!)
Worn glasses, left lens is from milk bottle
Delicately fragile golden bubble, looks expensive
Used treasure map with "X marked the spot"
Comical inflatable hook. Small hand grip inside
Old wooden leg, one careful owner
Severely worn and tattered pirate flag
For the sailor who sees no evil
Slightly dented spyglass, property of Bubble Pirate
Extremely aggressive (and sarcastic) parrot
"Property of Dave" embroidered on side
Rusty old key, opens Davy Jones' Locker