Deus Ex Human Revolution can actually be troublesome to beat however I located this accessible reference Deus Ex Human Revolution Cheats guide that aided me through my ascend to the top levels of the game.
Deus Ex Human Revolution Cheats are typed at the main menu. A verification message will appear when a cheat code is typed with no errors.
In Cheat Mode, Start up your game and continue to the screen that displays "Click to continue" or "Main menu". Deus Ex Human Revolution Cheats can then be typed for the chosen effect.
You'll have to enter the codes in blindly because there is no dialog box on display. If you type one code with errors, you are botching your opportunities entering any future cheat codes. If you're sure you made a mistake typing the Deus Ex Human Revolution Cheats, you'll have to restart the game for the cheat codes to take effect one more time.
In the guide you'll gain codes for the complete Need For Speed games, on all platforms. All titles from Need For Speed Underground to Need For Speed Most Wanted, Carbon,etc. on Xbox, PS3, Xbox 360, Sony PSP, DS, Wii, PC and more.
This complete guide can be downloaded in this Deus Ex Human Revolution Cheats website.