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