LastHitter LocalScript (In StarterGui)

-- reference: "Deathcam LocalScript" inside "PlayerGui / StarterGui"

function WaitForChild(where, what)
    repeat
        wait()
    until where:FindFirstChild(what)
    return where:FindFirstChild(what)
end

local Players = game:GetService("Players")
local Player = Players.LocalPlayer
local Character = Player.Character -- character should exist
local PlayerHumanoid = WaitForChild(Character,"Humanoid")

local ObjectValue = Instance.new("ObjectValue")
ObjectValue.Parent = Character
ObjectValue.Name = "LastHitter"

PlayerHumanoid.ChildAdded:connect(function(obj)
    if (obj:IsA("ObjectValue")) then
        ObjectValue.Value = obj.Value
    end
end)