You guys clearly don;t understand what the term "Tactical Shooter" refers to. Don't blame you; there are barely any these days, but they're not just shooting games in which you can use some sort of "tactics." Hell, by that logic, Jumping Flash is a tactical shooter. That roller-coaster shooting mini-game in Final Fantasy VII is a tactical shooter too.
No, the closest game that anyone has listed here is Rainbow Six Vegas, and even that barely qualifies. The original 3, on PC, are very much tactical shooters however. And if TC has a PS2 or a PSP, try the SOCOM games on either of those (not Fireteam Bravo 3).