Here is the full list of all 11 Tales of Monkey Island - Chapter 2: The Siege of Spinner Cay trophies - there are 5 bronze, 5 silver and 1 gold.
Sailed to the alleged resting place of La Esponja Grande
Heard the Secret of Donkey Island
Save the MerLeader from McGillicutty
Threatened a number of adversaries with a Hook
Get all of the Summoning Artifacts
Caught a Red Herring
Gave the MerLeader every kind of bait
Made LeChuck do something embarassing on the cliff
Read every fish joke
Kicked LeFlay off the Screaming Narwhal
Get Morgan angry by repeatedly checking out the mast