I played 2 games, in both of them hackers ruin the game and 1 shoot headshot.

grrr33nflash​ I'm sorry to hear about that! Please always make sure to use the report tool if you suspect someone might be cheating. 

I play as Specialist main and the NT-242 is the only weapon that one-shot headshots players, so I do it when I can... BUT .... the cheaters in here who get 56 headshots during a round of Blast are insane and ruin the game as much as all the rocket troopers. 

Hi there, I'm sorry to hear about your experience. If you suspect that you have found cheaters in a match, please make sure to report them using the in-game tools. You can find further instructions here.