I need a good single player shooter / FPS Tactical stealth maybe?

stalker: shaodws of chyrnoble & call of pripyat

metro 2033 is linear but its quite stealthy

tom clancy's: rainbow 6 vegas: 1 & 2

despite its budgetness a good fps is code of honor 3: desperate measures.. i like it alot despite the constant bashing the franchise gets for being the "knock-off king" in that its stolen from 3 of the biggest fps's in history (farcry 1, battlefield: vietnam & cod4). it has a certain undenyable charm to it and te gunplay can be really satisfying

finally one CANT have a stalthy fps list without the infamous.. sniper: ghost warrior

you use cover, camo, and weather to your advantage. sneaking in and out of hotspots and taking out opponents with all the telltales signs of a stelth fps (sniper rifles, knives, pistol). granted it has a few fast paced momments but the MP and steath mechanics can be really fun if you just bear with it long enough to understand them & appraciate the effort city interactive went too. i mean its first big budget titles .. EVER cut em 5 slices of slack and apply liberally.

http://www.youtube.com/watch?v=m6Y4z1Vd6w8

stalker: shaodws of chyrnoble & call of pripyat

metro 2033 is linear but its quite stealthy

tom clancy's: rainbow 6 vegas: 1 & 2

despite its budgetness a good fps is code of honor 3: desperate measures.. i like it alot despite the constant bashing the franchise gets for being the "knock-off king" in that its stolen from 3 of the biggest fps's in history (farcry 1, battlefield: vietnam & cod4). it has a certain undenyable charm to it and te gunplay can be really satisfying

finally one CANT have a stalthy fps list without the infamous.. sniper: ghost warrior

you use cover, camo, and weather to your advantage. sneaking in and out of hotspots and taking out opponents with all the telltales signs of a stelth fps (sniper rifles, knives, pistol). granted it has a few fast paced momments but the MP and steath mechanics can be really fun if you just bear with it long enough to understand them & appraciate the effort city interactive went too. i mean its first big budget titles .. EVER cut em 5 slices of slack and apply liberally.

http://www.youtube.com/watch?v=m6Y4z1Vd6w8

ionusX

Metro 2033 doesn't strike me as stealthy. The game is pretty much straightforward.

Non-PC, but Metal Gear Solid series? Top of the line stealth series
Could try Twin Snakes on gamecube, MGS2 on the PS2 or Xbox, MGS3 Subsistence on the PS2 (*I would recommend this over all else, even if just the original), or MGS4 on the PS3
Another game that comes to mind is Alpha Protocol, but I havent played it. Some liked it, some hated it. Look it up I guess.
Rainbow Six? Its a tactical first person shooter series. Ive only ever really really played Vegas, and roughly touched upon some others.
Now some that are less tactical
The Half Life Series. If the first feels too old, theres nothing wrong with starting on HL2
Mass Effect Series. The first isnt an amazing shooter, but the story makes up for that, and the second is much more shooter friendly while still haveing awesome story.
and this ones a stretch, but Vampire The Masquerade Bloodlines with the latest 7.x patch. This is more of an RPG, with some shooting.

ARMA 2 perhaps? obviously on the hardest dificulty if you like tactics and stealth.