Here is the full list of all 36 Lost Dimension achievements.
Clear the first stratum.
Defeat twenty enemies together with a comrade.
Create a weapon from energy with the Generator.
Unlock one Gift skill.
Discover a Tips file.
Score an S rating in a quest.
Clear a stage using very few turns.
Clear a quest for the first time.
Acquire all trophies.
Clear the second stratum.
Clear the third stratum.
Clear the fourth stratum.
Clear the final stratum.
Strengthen your bond with Himeno.
Strengthen your bond with Toya.
Strengthen your bond with Mana.
Strengthen your bond with Nagi.
Strengthen your bond with Sojiro.
Strengthen your bond with Zenji.
Strengthen your bond with Marco.
Strengthen your bond with Yoko.
Strengthen your bond with Agito.
Strengthen your bond with George.
Witness the true ending.
Clear the game by erasing only traitors.
Unmask the full might of The End and defeat him.
Clear all quests.
Unlock all Gift abilities for a character.
Complete all quests with an S rating.
Succeed in a Deep Vision.
Use defer twenty times.
Collect all Tips files.
Defeat five enemies at once.
Perform an attack with five assists.
Defeat an enemy with a berserk character.
Label someone with a red marker in the Vision screen.