1) Use a 1 hit sniper.
2) Train on M24.
3) Learn to scope on target not prescope , unless farming a spot.
4) Allows move.
5) Run with knife out.
6) Aim for body, unless using M24.
7) Jump when reloading.
8) Stay high and out of main pathways.
9) Learn enemies paths.
10) Find a path that gets you kills but stays out of the way of the enemy.
11) Use a extended mag.