Here is the full list of all 22 Oliver's Adventures in the Fairyland trophies - there are 14 silver, 7 gold and 1 platinum.
Obtain all trophies
Escape the dungeon
Kill the second boss
Find all treasures
Save the thief
Kill the first boss
Throw the sword 100 times
Find the dagger
Find the underwater treasure
Find the diving mask
Save the knight
Find the sticky glove
Don't fall from edge for 30 seconds
Find the flashlight
Kill 50 monsters
Find the spiked boots
Save the princess
Destroy 5 walls with bomb
Find the bomb
Die by the spikes 3 times
Do 72 jumps
Activate the statue