throw a grenade move you can't just sit and hold the left trigger down at a sniper. I am very good with them and I can either time my shot in between your shots or just sit there ads at you while your are tearing into me waiting for my reticule to sway into your head if it doesn't then I line of sight you right before I die and rinse and repeat. all I'm saying is be creative and strafe as much as posible