Here is the full list of all 40 Our World is Ended (EU) trophies - there are 22 bronze, 15 silver, 2 gold and 1 platinum.
All trophies acquired! Good job!
Got the Reina Ending.
Got the Yuno Ending.
Viewed every Event CG. Nice!
Selected every branching choice. Wow!
Viewed all of Yuno's Events.
Got the Tatiana Ending.
Viewed all of Tatiana's Events.
Got the Natsumi Ending.
Viewed all of Natsumi's Events.
Got the Asano Ending.
Viewed all of Asano's Events.
Got the Iruka No.2 Ending.
Viewed all of Iruka's Events.
Got the Owari Ending.
Cleared the Epilogue.
Cleared Chapter 17.
Cleared Chapter 16.
Viewed all of Owari's Events.
You failed to choose on the S.O.S. 20 Times! Yikes!
Got the Normal End... Hurray?
Cleared Chapter 15.
Cleared Chapter 14.
Cleared Chapter 13.
Cleared Chapter 12.
Cleared Chapter 11.
Cleared Chapter 10.
Cleared the Interlude.
Cleared Chapter 9.
Cleared Chapter 8.
Cleared Chapter 7.
Cleared Chapter 6.
Cleared Chapter 5.
Cleared Chapter 4.
You failed to choose on the S.O.S.
Cleared Chapter 3.
Cleared Chapter 2.
Cleared Chapter 1.
Tried out the S.O.S. System!
Cleared the Prologue.