I remember that I loved playing the PD game "Hangar 18" (if you don't know it: it would describe it as a mix of syndicate and walker - you controled your small character (I think it was about a man fleeing from Area 51 or so) with the joystick and aimed with the mouse. On your way you found different weapons like a uzi, a shotgun, grenades etc. Very cool was the ability to use vehicles in the outside world (although this wasn't really useful in the game).
All in all I found that game really cool, it was a bit bloody but the effects were impressive - but the biggest problem for me was, that it was just that short
My question now would be: Does anybody know games that are similar to "Hangar 18"? Maybe even modern games for the PC?