The Operative: No One Lives Forever is a story-driven video game, set in the 1960s, and stars spy Cate Archer as the eponymous Operative, who works for UNITY – a secret international organization "dedicated to protecting humanity from megalomaniacs bent upon world domination". During the story of the game, Archer is sent on missions to a number of locales, including Morocco, East and West Germany, the Caribbean, and the Alps, where she gets into intense situations, such as scuba diving a shipwreck, free-falling from an airplane without a parachute, and exploring a space station in outer space, all the while fighting armed villains.
http://www.ign.com/articles/2000/11/11/no-one-lives-forever-3http://www.gamespot.com/the-operative-no-one-lives-forever/reviews/My input:
Hands down second best stealth shooter game I played for PC (first being Splinter Cell <3). I loved this game so much because of the great story, long gameplay, changing environment, funny voices, funny assortment of spy gadgets and oh the humor. The in-game humor is actually funny and really really makes the game much better, setting the mood each time
I played all of the games in this series, they were all fantastic! give it a try, at least to have a good laugh