Here is the full list of all 49 Root Double -Before Crime * After Days- Xtend Edition achievements.
Obtained all achievements.
Viewed Yuuri's bonus √D Epilogue.
Viewed all endings/epilogues.
Unlocked all event CGs in Album.
Viewed all scenes.
Set everyone's Senses to their minimum values.
Set all female characters' Senses to their minimum values.
Set Salyu's Senses to her maximum value, and set all other characters' Senses to their minimum values.
Unlocked all TIPS.
Unlocked all memories in Xtend Episode.
Opened Xtend Episode.
Viewed all Bad Endings.
Viewed √D Normal Ending 3.
Viewed √D Normal Ending 2.
Viewed √D Normal Ending 1.
Viewed √D Good Ending After.
Viewed √D Good Ending BEFORE.
Viewed √D True Ending.
Unlocked all music tracks in Music.
Viewed Salyu's bonus √D Epilogue.
Viewed Mashiro's bonus √D Epilogue.
Unlocked all "Beyond*BEYOND" TIPS.
Viewed Jun's bonus √D Epilogue.
Viewed Kazami's bonus √D Epilogue.
Viewed Ena's bonus √D Epilogue.
Viewed √D Good Ending Before.
Viewed √D Good Ending AFTER.
Erased all malice in the RAM System.
Viewed the RAM System tutorial.
Unlocked 50% of TIPS.
Viewed 50% of scenes.
Viewed √A Normal Ending.
Started √D.
Viewed √C Good Ending.
Started √C.
Unlocked 50% of event CGs in Album.
Viewed √A Good Ending.
Viewed √B Good Ending.
Started √B.
Set everyone's Senses to their maximum values.
Unlocked 50% of music tracks in Music.
Set a character's Senses to their minimum value.
Viewed at least one Bad Ending.
Viewed the Senses Sympathy System tutorial.
Set a character's Senses to their maximum value.
Opened the Senses input screen.
Opened the MAP screen.
Opened the TIPS screen.
Started √A.