I have played many games before in lower ranks ( bronze, silver ) and the moment a little kid sees a reaver vandal on the floor they pull out their knife, run over to the gun, only to get caught in crossfire of the enemy and instantly die. These teammates who do this are usually botfrag duelists who don't entry.

So, I did a little experiment. A few rounds per game in different locations, I would drop something as simple as a Cavelier vandal on a dead body and camp there. Half of the time someone would fall for this the first time. Make sure the gun is low on bullets so they will reload when they pick it up. Hide behind a corner, and the moment you hear the gun pickup and reload, swing and get your free kill.

I know this is a really stupid idea of killing people, but it actually works if you don't overuse it. Have fun, and this works best with expensive skins.