There are several ciphers and scrap papers found in Der Riese.
Cipher 1 is found in Spawn, under a grate to the left of the mainframe, and when translated reads:
"Edward, it's time to kill Maxis."
Cipher 2 is found in the Zombie Spawn to the left of the mainframe, and out of bounds to the left of Juggernog, and when translated reads:
Cipher 3 is found outside the map in a room with a hanging man, viewable from Teleporter Z-B, and reads:
(Only the Second and Third characters are rendered in Illuminati Code)
Cipher 4 is found suspended from the ceiling of the side-room of Teleporter Z-B, where the Type 100 can be purchased. It is a message from "IGCS", addressed to "FS ER" and reads:
Observe and report
The seed has been planted
Maxis must not know."
"...comes the responsibility of absolute secrecy. No one is to know what you do, where you work, what our research has uncovered, or what our purpose will be. You will have no further contact with your governments or with your families. Your decision to fully dedicate your lives to Group 9-3-5 is absolute. In your lockers you will find your field ops manual which will direct you should our manifesto get compromised. We cannot afford to let this power fall into the wrong hands and therefore the field ops manual should be considered your bible. Make your preparations now. A new dawn is beginning for mankind.
Dr. L. Maxis
Field Operations Manual
Found in the Air Conditioning Unit near the bridge, this is a page from the Group 935 Field Operations Manual. It reads:
"In the event of any critical failure, you are instructed to take your cyanide tablet that's included in your field operations kit. In the event that you have misplaced yours, there are several methods that will accomplish the same task. For example, the test...
Field Operations Manual
Found in a gap in the floor of the Automobile Garage, opposite the Double-Barreled Shotgun. It reads:
"...is produced by bombarding an Americium-243 nucleus with a Calcium 48 nucleus. It then decays - after further decay a metastable isotope is formed. This leads us to believe that transference of matter is indeed possible, and even the re-animation..."
Found by interacting with a brick in a pile of rubble in the Automobile Garage. It reads:
"side effects of using 115. The power is undeniable but who can use such weapons without themselves turning..."
- The Ciphers in Der Riese are encoded using a modified version of the Illuminati Alphabet. The majority of the alphabet remains unchanged, however certain symbols (e.g. "D") are shown as a merger between the Weishaupt symbol (first column) and the DeMolay symbol (second column).