u/Iamelgalle

So I completed the game at 99% but I kept missing one cipher in biome 2, it was Objective 14 in my PS guide, I tried like a million times to find it and it never came up, I kept 19/20 ciphers for a long time and I finally decided to delete the game and saved data to start over, in my second run I was able to finally find my missing/bugged cipher, but the trophy won’t come up.

My question is, do I have to finish the game once again to collect my trophy and get the platinum or what should I do?