Player Dying

NOTE: The code here is untested.

Use the Died event of humanoids.

workspace.Player.Humanoid.Died:connect(function()
print('Player died!')
end)

Then we just incorporate a value.

local dead = false

workspace.Player.Humanoid.Died:connect(function()
dead = true
end)

To make it work with anybody that joins the game, use PlayerAdded.

local dead = false

game.Players.PlayerAdded:conect(function(player)
repeat wait() until player.Character
player.Character.Humanoid.Died:connect(function()
dead = true
end)
end)

~coo1o

LocalPlayer.CharacterRemoving That's an event that fires after the LocalPlayer dies. It would help to distinguish player death from player left within your script.