I sincerely don't understand why this game, during the years, has been acclaimed as the sort of classic FPS masterpiece that in reality it isn't. It's because of Cate Archer alone? Yes, she's a great, sexy character and a study case for how to write strong, charismatic female leads, the humour is at first genuinely funny and the story, albeit a bit predictable, is interesting enough. The problem is, gameplay wise, this game is a mess. It wants to be a mash-up of stealth and FPS and, most of the times, it is mediocre-average at both. The stealth is, de facto, mostly impossible due to the cameras having the most inconsistent field of view ever (sometimes they can spot you from 5 kilometers away, sometimes they don't see you when you're standing right next to them) and the enemies being all - and I mean all - the typical Shogo: Mobile Armor Division stuff of hitscanning thugs that can spot and kill you from miles and miles of distance with one single shot of a Kalashnikov (the kind of which I never saw even when playing Duke Nukem 3D at its maximum difficulty years and years ago), which in turn not only makes the attempts at having a full-on stealth approach a là Splinter Cell: Chaos Theory worthless but it also makes extremely frustrating the driving sections because you always have to stop driving in order to kill said thugs as otherwise it's you who is going to be killed. Also, I might add that 1) the gadget selection is cute, but most of them serves nothing and 2) the ending streak of final bosses because reasens reeks of a void of ideas from a mile. On a last note, the level design is good generally speaking, but sometimes it's a bit confusing and the OST is good too.
If you want the best from the FPS era of Monolith productions get the first F. E. A. R. - which is leaps and bounds better than this - and you'll be better served overall, Cate Archer or not.