How to Unlock the Secret Ending in Marvel's Wolverine

If you're like me and like to complete everything that a game has to offer before rolling credits, then Marvel's Wolverine may have left you a little confused. According to its description, you're awarded the Repressed Memories trophy for unlocking a hidden memory in Nightmare Trials, but even after finding every Nightmare Door in the game and completing the trials with an Adamantium ranking, I still didn't have the trophy. That's when I realized that Repressed Memories is actually a post-game trophy.