Hell yes SWAT 4 Gold got released on gog!
I remember playing this game as a kid, or at least the demo.
I started on Hard and got through the first three missions perfectly.
Then on the fourth mission I entered a room without seeing a suspect with a shotgun next to me and got killed. Damn junkies. I restarted the missions and two of my fellow officers got wounded

. Still I made it out allright.
You can equip paintballs and tazers and keep it non lethal. Just tell them to get down on the fucking ground and they will do your bidding.
Good stuff