Run it
Copy the script and paste it into your executor.
--Equip Gun to Make Kill all work
--- and Execute this script rapidly to Make all player in zombie died
--- enjoy
local player = game.Players.LocalPlayer
for i,v in ipairs(game.Players:GetPlayers()) do
if v.Name ~= player.Name then
local BH = v.Character.Humanoid or v.Character:FindFirstChild("Humanoid")
local BK = v.Character.HumanoidRootPart or v.Character:FindFirsrChild("HumanoidRootPart")
local args = {
[1] = BH,
[2] = BK,
[3] = 10,
[4] = Vector3.new(0.9932631850242615, 0.018498189747333527, 0.11439403146505356),
[5] = 2,
[6] = 0,
[7] = false
}
game:GetService("Players").LocalPlayer.Character.Pistol.GunScript_Server.InflictTarget:FireServer(unpack(args))
end
end
Must not Be on Zombie to make script work Then Equip pistol then execute and it will kill every zombie Execute rapidly to make sure all zombie team really died

Zombie lab [Equal Avatar Scale馃搹]