People are saying Danzig's a rambo grenade-fest. Well here's a simple solution that will get you to near the top of the scoreboards every time.
Step 1: use your SMG's sights.
Step 2: You are now a walking embodiment of death. Have fun mowing down sprayers.
It has nothing to do with getting the top score. I've been playing this game as long as anyone, I know what to do.
Its the overall gameplay that I don't like. It's not tactical, realistic, or fun (IMO).