It can go down a hell of a lot. 1 game when I first started doing it, I was at 25%, finished the game with a 2.5kd and dropped down to 4% lol Best way to do it is to play with your best weapon, then when you get super or heavy put TLW on. Get kills, run and hide and switch guns. Rinse and repeat. Did it in 3 games from 4% with that method