Here is the full list of all 18 Root Film trophies - there are 4 bronze, 4 silver, 9 gold and 1 platinum.
Obtained all other trophies.
Completed Yagumo's first chapter.
Completed Yagumo's second chapter.
Completed Riho's first chapter.
Completed Riho's second chapter.
Completed Yagumo's third chapter.
Completed Yagumo's fourth chapter.
Completed Yagumo's fifth chapter.
Cleared Max Mode for the first time.
Failed Max Mode for the first time.
Cleared every Max Mode.
Failed every Max Mode.
Cleared every Max Mode without failing once.
Met Shimanekko for the first time.
Found Shimanekko at every location.
Met Nego-Six for the first time.
Won all of Nego-Six's quizzes at every location.
Met Tamami and Kana.