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