Well I feel like the game is just filled with too many cheap one shot kills. I mean homing granades that stick to you and are an insta kill, shoulder charge, shotguns, fusion rifles. (Imo snipers are okay since body shots arent a one hit kil), are all very annoying to fight against. Then you also have heavies which I have a bit of mixed opinions about since they're supposed to be OP, but I feel like someone who is getting all head shots, should be able to take down someone who is machine gunning them with body shots.