Here is the full list of all 30 Dragon Sinker: Descendants of Legend achievements worth 1,000 gamerscore.
Watched the opening.
Gathered the 3 main chracters.
Obtained a ship.
Gathered the 3 legendary weapons.
Broke out of Gelph Prison.
Earned "A Season of Peace" ending.
Swapped teams 50 times.
Changed jobs 10 times.
Clarke joined the party.
Mastered one job.
Met the legendary heroes to undergo a new trial.
Used all scrolls on 1 main character.
Earned "World Peace" ending.
Earned "Days Filled with Love" ending.
Earned "World Domination" ending.
Dealt 5000 damage with one attack.
Defeated the Human Hero.
Defeated the Archdemon General.
Got all 16 jobs (except animal characters).
Won a super gorilla playing the lottery.
Won a super cat playing the lottery.
Won a super owl playing the lottery.
Won a regular gorilla playing the lottery.
Won a regular cat playing the lottery.
Won a regular owl playing the lottery.
Cleared all the subquests.
Mastered all jobs.
Dealt 99999 damage with 1 attack.
Won 10 rounds against Enah in battle.