[SOLVED]Hacker

Hello Everyone. Today I saw my first Hacker. I was playing in the Game Mode survival. Well the hacker was using Something like Tele Kill - I dont know if its called this. (I used to play CA so if the hack name is differnet tell me).
He also was doing tons of headshots, like 40 kills with headshots in a row, then normal kills then headshots.

Anyway I was wondering has anybody else seen any person doing this in AVA??

BTW Im new to the game, I started playing 7 days ago and just reached
Sgt First Class Class 1. Any tips would Great As Im still learning The game Maps.