Here is the full list of all 39 Death end reQuest achievements.
View each and every possible outcome.
Defeated countless enemies.
View Lydia's ending.
View Celica's ending.
View Lucil's ending.
View Clea's ending.
View Al's ending.
View Lily's ending.
View Shina's ending.
Clear Chapter 11.
Defeat the final boss.
Learn 50 skills using Flash Drive.
Transform into Glitch Mode countless times.
Defeat a powerful enemy in the Pain Area.
Transform into Glitch Mode a handful of times.
View the normal ending.
Clear Chapter 10.
Collect 80 of the episodes.
Clear Chapter 9.
Clear Chapter 8.
Collect half of the episodes.
Clear Chapter 7.
Visit the Strain Area for the first time.
Clear Chapter 6.
Clear Chapter 5.
Clear Chapter 4.
Use a Summon for the first time.
Use a Code Jack for the first time.
Clear Chapter 3.
Clear Chapter 2.
Use Install Genre for the first time.
Clear Chapter 1.
Switch over into the real world.
Rest in camp for the first time.
Perform a Flash Drive for the first time.
Connect a Knockback combo with a party member for the first time.
Clear the Prologue.
Enter Glitch Mode for the first time.
Perform a Knockback for the first time.