Fun fact: I invented a game style when I played CoD, starting in the Black Ops series. It's a bit like Gun Game but more random. 

Here's how it works: make a class that uses only a knife as a weapon and sink everything else into perks and [s]throwing weapons[/s]ordinance. Call it "Switchblade." The objective is to get a knife kill, then pick up the gun dropped by the dead guy and use it to get the next kill, then swap weapons again with that guy.

So you [i]switch[/i] weapons every time you get a [i]blade[/i] kill after spawning.

:D