Raycast gun increasing the players kills for every shot instead of once when the shot player dies?

In my game, I have a gun that uses raycasting. I want to give the player +1 "VampireKills" when the vampire they shoot dies. But instead of doing the intended function, the player gains +1 kills for every shot they landed beforehand. Another problem is that when the player shoots a vampire and they die by any other means, the player will still get the kill(s). Help would be appreciated. Heres a snippet of the gun's code. The function that gives them a kill is located at line 59.

if result then
		local part = result.Instance
			local humanoid = part.Parent:FindFirstChild("Humanoid") or part.Parent.Parent:FindFirstChild("Humanoid")
			local hitbox = part
		local torso = part.Parent:FindFirstChild("Torso") or part.Parent.Parent:FindFirstChild("Torso")
		local root = part.Parent:FindFirstChild("HumanoidRootPart") or part.Parent.Parent:FindFirstChild("HumanoidRootPart")
		local charactervalues = part.Parent:FindFirstChild("charactervalues") or part.Parent.Parent:FindFirstChild("charactervalues")
			local material = part.Material
			
			if part.Name == "Part" or part.Name == "Union" or part.Name == "Wall" or part.Name == "Mattress" or part.Name == "Eqa" or part.Name == "Handle" or part.Name == "Lever" or part.Name == "Union" or part.Name == "Bulb" or part.Name == "Light" or part.Name == "Lever1" or part.Name == "Lever2" or part.Name == "Metal1" or part.Name == "Sand" or part.Name == "Arm" or part.Name == "Floor" or part.Name == "Frame" or part.Name == "Glass" or part.Name == "Paint" or part.Name == "Seat" or part.Name == "VehicleSeat" or part.Name == "Wedge" or part.Name == "Baseplate" or part.Name == "Base" or part.Name == "Crane" or part.Name == "Forklift" or part.Name == "MeshPart" or part.Name == "Hook" or part.Name == "Pallet" or part.Name == "Monitor 3" or part.Name == "RopeCapRoundBase" or part.Name == "RopeShaftRoundSmoothBase" or part.Name == "Trashcan" or part.Name == "Support" or part.Name == "Vending Machine" or part.Name == "Ambient Light" or part.Name == "Attach" or part.Name == "Main" or part.Name == "Pillar" or part.Name == "Truss" or part.Name == "IndoorWall" or part.Name == "Bathroom doors" or part.Name == "door frame" then
				if part.Material == Enum.Material.Plastic or part.Material == Enum.Material.SmoothPlastic or part.Material == Enum.Material.Neon or part.Material == Enum.Material.Fabric then
				
					local plastic = game.ServerStorage.bullethits.PlasticHit:Clone()
					plastic.Parent = game.Workspace.Thrown
					
				plastic.Position = result.Position
					plastic.Sound.PlaybackSpeed = 	random:NextNumber(0.5, 1.5)
					plastic.Script.Enabled = true
					plastic.Sound:Play()
				elseif part.Material == Enum.Material.Asphalt or part.Material == Enum.Material.Basalt or part.Material == Enum.Material.Brick or part.Material == Enum.Material.Cobblestone or part.Material == Enum.Material.Concrete or part.Material == Enum.Material.CrackedLava or part.Material == Enum.Material.Ground or part.Material == Enum.Material.Granite or part.Material == Enum.Material.Slate or part.Material == Enum.Material.Sandstone or part.Material == Enum.Material.Ice or part.Material == Enum.Material.Rock or part.Material == Enum.Material.Salt or part.Material == Enum.Material.Pebble or part.Material == Enum.Material.Marble or part.Material == Enum.Material.Limestone or part.Material == Enum.Material.Pavement or part.Material == Enum.Material.Glacier then

					local rock = game.ServerStorage.bullethits.RockHit:Clone()
					rock.Parent = game.Workspace.Thrown
					rock.Position = result.Position
					rock.Sound.PlaybackSpeed = 	random:NextNumber(0.5, 1.5)
					rock.Script.Enabled = true
					rock.Sound:Play()
				elseif part.Material == Enum.Material.CorrodedMetal or part.Material == Enum.Material.DiamondPlate or part.Material == Enum.Material.Foil or part.Material == Enum.Material.Metal then

					local metal = game.ServerStorage.bullethits.MetalHit:Clone()
					metal.Parent = game.Workspace.Thrown
					metal.Position = result.Position
					metal.Sound.PlaybackSpeed = 	random:NextNumber(0.5, 1.5)
					metal.Script.Enabled = true
					metal.Sound:Play()
				elseif part.Material == Enum.Material.Wood or part.Material == Enum.Material.WoodPlanks then

					local wood = game.ServerStorage.bullethits.WoodHit:Clone()
					wood.Parent = game.Workspace.Thrown
					wood.Position = result.Position
					wood.Sound.PlaybackSpeed = 	random:NextNumber(0.5, 1.5)
					wood.Script.Enabled = true
					wood.Sound:Play()
					
				elseif part.Material == Enum.Material.Sand then

					local sand = game.ServerStorage.bullethits.SandHit:Clone()
					sand.Parent = game.Workspace.Thrown
					sand.Position = result.Position
					sand.Sound.PlaybackSpeed = 	random:NextNumber(0.5, 1.5)
					sand.Script.Enabled = true
					sand.Sound:Play()

				end
				end
			
			if hitbox and hitbox.Name == "Hitterbox" then
				local hitted = hitbox.Parent.Parent
				--give the player a kill
				hitted.Humanoid.Died:Connect(function()
					if humanoid.Parent:FindFirstChild("charactervalues") then
						player.challengedata.VampireKills.Value += 1
					end
				end)
				--[[
				if charactervalues:WaitForChild("Role").Value ~= "Vampire" and humanoid ~= user2 then
					user2:TakeDamage(40)
					game.ServerStorage.Dummy:Clone().Parent = playa.PlayerGui
				end
				]]
				if charactervalues:WaitForChild("Role").Value ~= "Vampire" or humanoid.PlatformStand == true or humanoid == user2 then 
					user2:TakeDamage(0)
				else
					humanoid:TakeDamage(60)
					torso.BloodSplatter.Enabled = true
					spawn(function()
						wait(0.1)
						torso.BloodSplatter.Enabled = false
					end)
					torso.BloodSplatter.Enabled = true
					spawn(function()
						wait(0.1)
						torso.BloodSplatter.Enabled = false
					end)
				local sound = game.ServerStorage.Hit:Clone()
				sound.Parent = root
				sound.PlaybackSpeed = 	random:NextNumber(0.5, 1.5)
				sound:Play()
				spawn(function()
					wait(3)
					sound:Destroy()
					end)
				
				end
			end

			
		end

	
	

	wait(0.25)
		bullet_clone:Destroy()
		end
end)