Here is the full list of all 13 A King's Tale: Final Fantasy XV achievements worth 1,000 gamerscore.
Kill 5 or more enemies with one spell.
Defeat 1000 enemies.
Complete Story Mode.
Get the alternate story ending.
Execute the Bonds of Battle.
Die 10 times in Story Mode.
Use the Armiger on a tonberry.
Deflect 50 stingers or needles.
Detonate 3 bombs simultaneously.
Complete all Dream Battle Special Challenges.
Perform every move in one combo string.
Finish a Dream Battle in under 1 minute.
Finish a Dream Battle without taking damage.