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