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