In the CIA Level, when u get to the point where Lambert tells u that a man inside has hidden ur SC-20k u carry on walking u will see 2 doors one on the right one on the left.A man will come out of the right door wait till he goes to the right door walk up to him and he will go and get the guards walk in to the right door he will see u go here and tell the guards ur in there but u use the computer turn the light off and run into the left room turn that light off then after a few seconds or minutes come out off the left room an agent will be out side the room grab him and knock him out then go in side the right room and there will be a Security guard runnig into the light switch trying to turn it on but he cant then knock him out!if u use this cheat u dont have 2 hide because youve taking care of the 2 guards and the man that went to get them is distracting another guard in the security room!! Brilliant!!