Here is the full list of all 31 Dragon Sinker trophies - there are 14 bronze, 10 silver, 6 gold and 1 platinum.
Obtained all trophies.
Cleared all the subquests.
Earned ”Days Filled with Love” ending.
Earned ”World Peace” ending.
Earned ”World Domination” ending.
Earned ”A Season of Peace” ending.
Swapped teams 50 times.
Won 10 rounds against Enah in battle.
Used all scrolls on 1 main character.
Mastered all jobs.
Got all 16 jobs (except animal characters).
Clarke joined the party.
Broke out of Gelph Prison.
Won a regular owl playing the lottery.
Won a regular gorilla playing the lottery.
Gathered the 3 legendary weapons.
Defeated Deitus.
Defeated the Archdemon General.
Defeated the Human Hero.
Dealt 99999 damage with 1 attack.
Met the legendary heroes to undergo a new trial.
Won a super owl playing the lottery.
Won a super cat playing the lottery.
Won a regular cat playing the lottery.
Obtained a ship.
Dealt 5000 damage with one attack.
Won a super gorilla playing the lottery.
Changed jobs 10 times.
Gathered the 3 main chracters.
Mastered one job.
Watched the opening.