Steal the Codex of Knowledge is an Act of Infamy found in Siberia. This Act is the first part of completing Objective 6 - Road to Doomsday.
Mission Brief[]
"Intercepted transmissions indicate that top H.A.M.M.E.R. scientists have been working in Severnaya on a project known as the "Codex of Knowledge". The Codex is an advanced computational device that could well be the key to developing the Doomsday Device. Infiltrate the research station and steal the Codex, but be prepared for fierce opposition. A mercenary scientist will also be needed at some stage if the Codex is to be understood and utilized."