Payday 2 has missions that give bonus cash for completing them without being spotted.

You get penalized for killing civilians. You can order them on the ground, zip tie them, and put them in an area out of the way. You have a limited number of zip ties.

You can kill guards, but you then have to answer their radio to keep dispatch from getting suspicious and calling the cops. If you kill more than three guards, they get suspicious weather you answer the radio or not.

If you kill someone, you need to bag the body and toss in a place where it will not be seen. Otherwise, witnesses will alert the cops and everyone on the map. You have a limited number of body bags.

The game isn't violence free, but it keeps the violence to a minimum if you want the bonuses from being quiet.