I understand how you feel. That always happens to me every time I play team snipers. You just got to get him before he gets you, thats really the only thing that you can do. Maybe shoot him from the side or back. Those shots are just as effective.
I have to go with the Sniper rifle. One shot to the head and its a kill. or two shots to the torso then its a kill. I just don't like when the beam rifle overheats.
Welcome to the Forum.
And holy crap.. that looks awesome. It makes you feel like your literally standing there and looking at it. If you made that yourself, keep doing it. You have a promising talent there