How to make my timer keep going after death?

Hello, I am still having a little bit of trouble with my timer. I have a map changing system that changes the map of my game after 600 seconds, and my timer is going to be set to 600 seconds (10 minutes), but I've been trying to test play my game after putting the script of my timer into a gui, and whenever I die it completely resets my timer and I want the timer to keep going even after death. Here's the code to my gui:

-- Instances:

local ScreenGui = Instance.new("ScreenGui")
local TimerNumbers = Instance.new("TextLabel")
local Frame = Instance.new("Frame")
local TextButton = Instance.new("TextButton")

--Properties:

ScreenGui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")
ScreenGui.ZIndexBehavior = Enum.ZIndexBehavior.Sibling
ScreenGui.ResetOnSpawn = false

TimerNumbers.Name = "TimerNumbers"
TimerNumbers.Parent = ScreenGui
TimerNumbers.AnchorPoint = Vector2.new(0.5, 0.5)
TimerNumbers.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
TimerNumbers.BackgroundTransparency = 1.000
TimerNumbers.BorderSizePixel = 0
TimerNumbers.Position = UDim2.new(0.5, 0, 0.0500000007, 0)
TimerNumbers.Size = UDim2.new(0.5, 0, 0, 50)
TimerNumbers.Visible = false
TimerNumbers.Font = Enum.Font.Cartoon
TimerNumbers.Text = "00:00"
TimerNumbers.TextColor3 = Color3.fromRGB(255, 255, 255)
TimerNumbers.TextScaled = true
TimerNumbers.TextSize = 14.000
TimerNumbers.TextWrapped = true
TimerNumbers.Visible = true

Frame.Parent = ScreenGui
Frame.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
Frame.Position = UDim2.new(0.360549718, 0, 0.370679379, 0)
Frame.Size = UDim2.new(0, 344, 0, 216)
Frame.Visible = true

TextButton.Parent = Frame
TextButton.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
TextButton.Position = UDim2.new(0.209302321, 0, 0.333333343, 0)
TextButton.Size = UDim2.new(0, 200, 0, 50)
TextButton.Font = Enum.Font.SourceSans
TextButton.TextColor3 = Color3.fromRGB(0, 0, 0)
TextButton.TextSize = 14.000
TextButton.MouseButton1Click:connect(function()
    Frame.Visible = false
end)

-- Scripts:

local function VLHW_fake_script() -- TimerNumbers.Script 
    local script = Instance.new('Script', TimerNumbers)

    local timer = script.Parent
    local minutes = 0
    local seconds = 5

    repeat
        if seconds <= 0 then
            minutes = minutes - 1
            seconds = 59
        else
            seconds = seconds - 1
        end
        if seconds < 10 then
            timer.Text = tostring(minutes)..":0"..tostring(seconds)
        else 
            timer.Text = tostring(minutes)..":"..tostring(seconds)
        end
        wait(1)
    until minutes <= 0 and seconds <= 0

    for i,v in ipairs(game.Players:GetPlayers()) do
        local character = v.Character
        local humanoid

        if character then
            humanoid = character:FindFirstChildOfClass("Humanoid")
        end

        if humanoid and humanoid.Health > 0 then
            humanoid.Health = 0
        end

        Frame.Visible = true
        v.TeamColor = BrickColor.new("Really red")
    end
end
coroutine.wrap(VLHW_fake_script)()

Where it says --Scripts is where my timer script is located. The rest is just the lua to my gui, and whenever I set ResetOnSpawn to true, my timer resets after every death which isn't what I want, but when I set it to false, it just completely stops after it runs out of time. I don't know how to make it just continuously run after 10 minutes. Any ideas?