On the Mona Lisa Decipherage part, In order to solve it you must:
1. Move the black light over all the symbols
2. Decode the message.
The message is "Da Vinci Painted Those That Knew Between Bacchus And Uriel Lies The Clue"
The Answer to the first Cryptex is GRAIL.
MAGDALENE is the answer to the second cryptex.
RICHARD is the answer to the third Cryptex.
On the letter tile puzzle under sister saundier's bed, If you rearange the letter tiles, the correct answer is the word "SION", spelled across the center row. This will get you the bronze tablet.
The first decoding puzzle you do, The answer is "THE MONA LISA".
At saint sulpice, during the tomb puzzle, push the tiles in this order, (from left)
This will open then box on the floor.
If you type in Phillips Exeter in the codes section, you get:
One hit with the fist kill
To unlock all bonuses in the game, go to the Cheats sub-menu in the options menu and enter the code Et In Arcadia Ego.
To unlock all Visual Database Entries, go to the Cheats sub-menu in the Options menu and enter the code Apocrypha.
To unlock Double Health, go to the Cheats sub-menu in the Options menu and enter the code Sacred Feminine.
To unlock God Mode, go to the Cheats sub-menu in the Options menu and enter the code Vitruvian Man.
To unlock Level Select, go to the Cheats sub-menu in the Options menu and enter the code Clos Luce 1519.
To unlock One Hit Weapon Kills, go to the Cheats sub-menu in the Options menu and enter the code Royal Holloway.
To gain unlimited health type in VITRUVIAN MAN in the codes screen.
At the games menu, go to the sub-menu Cheats, then type in one of the following cheats to get acces to them:
- Et In Arcadia Ego: Alle bonussen vrijgespeeld.
- Apocrypha: Every part of the visual database is unlocked
- Sacred Feminine: Twice as much health.
- Vitruvian Man: God-Mode.
- Clos Luce 1519: Level select
- Phillips Exeter: One hit kills
- Royal Holloway: One hit weapon kills