This is the part where you learn how to find Vincent and have him join your party. First go to the Shinra mansion in Nibelhiem and walk inside. Then you have to solve a puzzle that will open a safe in the top story of the mansion. To find the safe go to the entrance of the mansion and go up the stairs when you reach the landing go to the door on the left side and enter a hallway follow the hallway and go up the short set of stairs and it should be right there. Inside the safe is Odin summon spell and the Basement key which you will need to get Vincent so in other words you need to open the safe and that is where the puzzle comes in to play. First go back to the entrance to the mansion and head left and enter the doorway and on the wall or floor you will find a piece of paper that gives you three riddles. Look at the piece of paper and read the riddles to find the code to the safe. The first one says in the chest that is in the room with the most oxygen and that is the chest in the upper floor and to the left (where you found the safe but a little down more). The second riddle says something about a room where tea is dry or something like that read it for yourself to find out exactly. You need to go to the room where the piano is and look behind the piano. The third riddle gives a list of steps that you should take from the upper right room but it is by a chair somewhere. Finally the fourth one that you can not see on the note is actually on the note and it is below the third one in the invisible slot and it is written in invisible ink and you do not have to find it somewhere it will automatically tell you what the code is. Well that is all of the codes but if you do not want to find the numbers yourself here they are the first one is right thirty six, the second one is left ten, the third one is right fifty nine, and the fourth and final one is right ninety seven. This combination safe is like a real one so you can not skip any numbers or it will not work. When you open the safe, get ready for a fight with a weird looking monster that will come out of the safe right when you open it. He is not that hard though just have someone cast Big Guard enemy skill but if you do not have it that is alright just keep healing when your HP gets low. Also use high level magic spells and summon spells to until he is dead. Like I said before you will get a Basement key and an Odin summon for your troubles. Now go to the basement which from the entrance of the mansion, is up the stairs and to the right room. Then you go down into the lower room with the metal wall looking thing in the corners go into the metal thing and you will find out that it is a door. The door will lead to a spiral staircase, go down it and you will see a hallway that is kind of pinkish in color go down that and you go down that to the next screen then you go down that a couple of feet then you will see a wooden wall with a door in it. Go to the door and walk inside of it, then go to the center closed coffin and press o and the lid will come off and Vincent should pop up and you will talk for a while then he will go back in his coffin and when you try to talk to him again he will say go away. So leave the room and walk start walking away you came in and then Vincent will stop you and say that he wants to help you say yes and he will join your party.