You are Gabe Logan and your objective is to save the world...
You are an federal agent, so you can use all those fine stuff such as (silenced) Beretta, M16 assault rifle or M79 grenade launcher. As you can see, your arsenal is not futuristic. You will really do not have plasma blaster rifle in your hands, on the other hand, I´ve never seen such an electric tazer ;)
Levels are really well-designed, there´s always something new and you keep on exploring with your eyes open wide and with tongue on your jacket. Game contains of twenty levels with the final boss in the end. Graphics can be even better, but it´s sufficient.... Metal Gear Solid has better IMHO ;)
Syphon Filter is really good franchise and this first game of the series is (as usually) the best. A real must-have for every PSX fan.