OKAGE: Shadow King

This trophy may be the hardest in the game but only because of the luck factor involved. The Q of Hearts is a weapon for Epros that is dropped by the Masterless Sword enemy. I suggest that you progress through the story until you complete the Deep Grave Pit dungeon because after that, you should have obtained a key to the Gear Tower in Addashi Desert. Head towards the Gear Tower and make sure to save at the diary right outside the tower! While it is possible to encounter the Masterless Sword enemy in the World Library dungeon, it is a much more tedious process because enemy encounters are random and you are not always guaranteed to get the Masterless Sword as an enemy. After saving, head into the Gear Tower to fight the Phantom Evil King. You will see 4 Masterless Sword enemies appear beside him. Aim to defeat all 4 of the Masterless Swords first. I suggest using combine attacks with 2 characters (I used Ari & Rosalyn) while the 3rd character heals (In my case, this was Linda). Now, if any of the Masterless Swords drop a treasure chest instead of a money bag then go ahead and finish the fight as this means the Q of Hearts has dropped. If none of the Masterless Swords dropped a treasure chest, either lose the fight or exit the application then reload your save and try again. This is entirely luck based so it could be a while before the Q of Hearts drops, just keep trying at it.