Lost and Found Trophy
Lost and Found
Find the master's lost old hammer
During the wall jigsaw puzzle in Youko's room there is a model train set in the middle of the room. Place the train carriage on the train engine then interact with it to start it up; it will do a lap around and a key will fall from the little house on to the carriage. Pick up this key and use it on the chest in the corner of the room. Inside you will find some pieces for the wall puzzle and a hammer. Interact with this hammer to unlock the trophy.