OP Zombie script

function dmg()
	local h = hit.Parent:FindFirstChild("Humanoid")
	if h ~= nil then
		h.Health = h.Health - 1
        h.WalkSpeed = 0
	end
end
function infect(hit)
	local h = hit.Parent:FindFirstChild("Humanoid")
	if h ~= nil and hit.Parent ~= script.Parent then
		local infection = script:Clone()
		infection.Parent = hit.Parent
	end
end
script.Parent.Torso.Touched:connect(infect)
script.Parent["Left Arm"].Touched:connect(dmg)
script.Parent["Right Arm"].Touched:connect(dmg)
while true do
	wait(.1)
	script.Parent["Head"].BrickColor = BrickColor.new("Forest green")
	script.Parent["Left Arm"].BrickColor = BrickColor.new("Forest green")
	script.Parent["Left Leg"].BrickColor = BrickColor.new("Dirt brown")
	script.Parent["Right Arm"].BrickColor = BrickColor.new("Forest green")
	script.Parent["Right Leg"].BrickColor = BrickColor.new("Dirt brown")
	script.Parent["Torso"].BrickColor = BrickColor.new("Dirt brown")
	script.Parent.Humanoid.MaxHealth = 35
    script.Parent.Humanoid.Health = 35
	script.Parent.Humanoid.WalkSpeed = 2
	script.Parent.Animate.walk.WalkAnim.AnimationId = "http://www.roblox.com/asset/?id=956920334"
end