Here is the full list of all 49 Root Double -Before Crime * After Days- Xtend Edition achievements.
Obtained all achievements.
Viewed all scenes.
Viewed Yuuri's bonus √D Epilogue.
Viewed all endings/epilogues.
Unlocked all event CGs in Album.
Unlocked all "Beyond*BEYOND" TIPS.
Unlocked all TIPS.
Unlocked all memories in Xtend Episode.
Viewed all Bad Endings.
Opened Xtend Episode.
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.
Set everyone's Senses to their minimum values.
Set all female characters' Senses to their minimum values.
Opened the MAP screen.
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.
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 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.
Opened the TIPS screen.
Viewed √B Good Ending.
Unlocked 50% of event CGs in Album.
Started √B.
Viewed √A Normal Ending.
Viewed √A Good Ending.
Set everyone's Senses to their maximum values.
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.