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