To cheat, you have to edit “user.ini” which is in the “deusex\\system” folder and change an empty key binding from, for example, 't=' to 't=talk' for all occurrences of 't='. Then when in the game, press T to make a line 'Say:' display and delete the word 'Say'. Next, go to the console and type in set DeusEx.JCDentonMale bCheatsEnabled True. Now you can use one of the following codes:
god: become invincible
invisible true/false: become invisible
legend: unlock secret menu
allaugs: get basic augmentations
ghost: walk through walls
tantalus: kill Current Target
opensesame: unlock Targeted Door
iamwarren: EMP Field On
allhealth: get max Health
allenergy: get max Energy
allskillpoints: get all Skill Points
behindview 1/0: behind view on or off
walk: flying mode off
fly: flying mode on
allweapons: get all Weapons
allskills: get all Skills
allammo: max out Ammo
allcredits: get 10000 Credits
allimages: unlock all Images