1) The game has one glitched trophy - Crime Scene Investigator. Other guides say to save before entering the baroness room but on the PS3 the game will auto save inside anyway so this won't work. Backing your save file to PS+ is the only way. All you have to do to not miss the trophy is to STAY in the room and NOT leave to report to Legrand until the trophy pops (while checking all items). Another VERY IMPORTANT tip is to remember to NOT take the diary lying on the desk, but to read it with . Following these two steps and checking every item in the room will almost surely net you the trophy.
There are also reports from people to NOT SKIP the text while being in the room.
2) Save your game from time to time as bugs and glitches like to occur in this game and your character can get stuck in a wall which forces you to restart the game from last save.
3) If you want a platinum trophy then do not ever hit or use any hints as it will lower your overall score which is neccessary for all trophies.
4) Also look out to not hit "Hints" in your journal accidently as it can also lower your score.