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