kill all

for i,v in game.Workspace:GetDescendants() do
if v == game:GetService("Players").LocalPlayer.Character:WaitForChild("Humanoid") or not v:IsA("Humanoid") then continue end
    local args = {
        v,
        -math.huge
    }
    game:GetService("ReplicatedStorage"):WaitForChild("ChangePlayerHP"):FireServer(unpack(args))
end