I have by a couple different factors..

PURE LUCK!!!! and memorizing where all he guys are. Start off by getting body armor behind you. Peg the guys ahead of you and take a right. Make a left at the exit going down to the heart of the satille. Peg a guy at the bottom while running. Go left and get the auto shooter thing and hit trevilian. Get the computer too. run and follow him. Eventually after chasing him. he will run though the other crate. There you pick up the second body armor. Other than that, just keep trying, it will come eventually

i havent played in awhile but i think you have to be really good! i think i did it but i don't remember how...um maybe you should use cheats but if you don't want to you just have to be really quick and run after that guy as soon as you see him. make sure that when you attack him that you have a decent gun.

yes. i have beaten the entire game on 00 agent.