EDIT IN GAME

-- Instances:
local ScreenGui = Instance.new("ScreenGui")
local Frame = Instance.new("Frame")
local TextButton = Instance.new("TextButton")
--Properties:
ScreenGui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")
ScreenGui.ZIndexBehavior = Enum.ZIndexBehavior.Sibling
ScreenGui.Parent = game.CoreGui

Frame.Parent = ScreenGui
Frame.BackgroundColor3 = Color3.new(0, 0, 0)
Frame.Position = UDim2.new(0, 0, 0.85822022, 0)
Frame.Size = UDim2.new(0, 258, 0, 94)
Frame.Draggable = true

TextButton.Parent = Frame
TextButton.BackgroundColor3 = Color3.new(0.666667, 0, 0)
TextButton.Position = UDim2.new(0.0658914745, 0, 0.321428567, 0)
TextButton.Size = UDim2.new(0, 200, 0, 50)
TextButton.Font = Enum.Font.SourceSans
TextButton.Text = "*KILL*"
TextButton.TextColor3 = Color3.new(0, 0, 0)
TextButton.TextSize = 14
TextButton.MouseButton1Click:Connect(function()
	game.Players.LocalPlayer.Character:Destroy()
end)