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