Check the game on Cracked on my recent matchs
Hour : 15:02
11 min 44 game
Look at 1 min around, the steps sound came after he aimed for el diablo, it's an obvious one, later on this move he follows soldat through the wall with 100% precision.
Around 3.20 or less that's all you need, pre-aimed a static ghost player through the stairs.
As I said before he's not good at aiming or killing in particular but he has some kind of WH for sure.