you contol an hovercraft with your mouse, armed with miniguns.(i think left click is miniguns, right rockets) your enemies are mainly guards(i only played the demo). or the army or private security. in the part i played u try to escape a building, floor by floor inside of this very hovercraft. isometric 3d game from more than ? a decade ago. on pc.
think isometric 3d like crusader no remorse meets viewpoint. with a bit of ps1'loaded' gameplay wise and original syndicate(futuristic).

anyone?

M.G.T. ? an old Titus game IRC (EDIT: Loriciel not Titus)

Link : http://www.grospixels.com/site/mgt.php

(EDIT 2: the forum is still very buggy, I try re-adding the link...)

no, it is way much more advanced in graphics. thinksyndicate or crusader or even starcraft

Ghost in the Shell, for PS1?

nope,it is Vyruz Destruction-of-the-untel-empire!