Here is the full list of all 23 World End Syndrome (EU) trophies - there are 7 bronze, 8 silver, 7 gold and 1 platinum.
Obtained all trophies.
Had a dream about Kaori Yamashiro.
Maxed out all auras.
Miu Amana called you a pervert 10 times.
Cleared the Truth route.
Filled in all character slots.
Read all of the TIPS.
Collected all CGs.
Cleared Miu Amana’s route.
Found all five colors of the Mihate Town Brochures.
Cleared all missions.
Miu Amana deleted your pictures.
Listened to all of Hikaru Tsukioka's radio episodes.
Received Hattori’s cod-liver candy.
Cleared Yukino Otonashi’s route.
Celebrated Maimi's birthday.
Cleared Maimi Kusunose's route.
Completed the mission "Flowers for You."
Cleared Rei Nikaido’s route.
Revealed Hanako Yamada's true identity.
Cleared Saya Kamishiro’s route.
Watched the worst ending.
Joined the Mystery Club.