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