Here is the full list of all 31 Raging Loop trophies - there are 6 bronze, 20 silver, 4 gold and 1 platinum.
Obtained all trophies.
Found "All-Night Betrayal."
Found "Primeval Dance."
Reached "Myth."
Reached "Darkness."
Reached "Wit."
Reached "Infiltration."
Reached "Yomi."
Reached "Dense Mist."
Obtained Key "Truth of the Girl."
Obtained Key "Truth of the Genius."
Obtained Key "Truth of the Journalist."
Obtained Key "Truth of the Doctor."
Obtained Key "Truth of the Young Leader."
Found the hidden "hint" and watched it.
Reached Ending No.3 and obtained Key "Ending Loop and Giant Monster."
Obtained Key "Hunter's Confession."
Obtained Key "Irrational Purge."
Reached Ending No.2 and obtained Key "Raising Loop."
Obtained Key "Raging Loup."
Obtained Key "Myth & Archetype."
Obtained Key "Will of the Crow."
Obtained Key "Berserk."
Obtained Key "Taboo Name."
Obtained Key "Nice Officer."
Reached Ending No.1 and obtained Key "Sink Into Nirvana."
Obtained Key "True Evil."
Obtained Key "Werewolf & Resurrection."
Obtained Key "Distant Light."
Solved the mystery and returned home.