The game has 4 endings, 2 of which can be done in one playthrough so all you need to is to finish the game 3 times.
1st Playthrough (Dweller in the Dark Trophy- Good Ending):
– Restore the memories of all successors without restoring Io’s memories (Eos Vestiges) and beat the final boss (The Virgin Born).
The game will put you back in the Main Base, touch the door behind where the Mistle was used to be and watch the cutscene.
– Now you are back again in the main base and the Mistle is there, find all Eos Vestiges and restore Io’s memories and then beat the Final Boss again and watch the cutscenes.
ALL COMPLETED FOR PLAYTHROUGH 1 (Touch the door now to start NEW GAME+, choose same difficulty to make things easier for you).
2nd Playthrough (To Eternity Trophy – Neutral Ending):
– Save at least one successor by restoring their memories (Successor of the Breath or any of the other Successors whose vestiges are easy to find) and finish the game.
ALL COMPLETED FOR PLAYTHROUGH 2 (Touch the door now to start NEW GAME+, choose same difficulty to make things easier for you).
3rd Playthrough (Heirs Trophy – Bad Ending):
– Finish the game without restoring (saving) any successor memories. Simply blaze through the game.
Now the Determiner of Fate Trophy should unlock