[Blast Shotgun] total trash, needs smaller bullet cone and longer range.(maybe a red dot site?)
[Carbine] is a good gun, but needs a slight reduction in bullet damage.(so people stop farming so hard)
[GA3A] absolute dodo butter, needs slight increase in damage and smaller bullet cone.(I used it for a long time, it needs a buff)
[G36] good gun, but if GA3A is buffed it needs A slight buff too, to stay competitive.
[upgrade] is actually kinda good. But count down should be based on played game time, and not outright like how it is now.{it might help new players if shield was a buyable item(15%smaller), and upgrade just came with a bigger shield(normal size)}.
[knife] more speed
[katana] a way to tell where it will hit, (kind of like war bow)
But that's just how I feel based on what I have used.
Kill farming starts well into the 800s. With a bit of 'L@G', Nano or Carbine it makes them feel like they have the power of God, from how some of them act anyway.