Swing

Lesson 2 of 20 in Coddy's Roblox Game: Battlegrounds course.

With a tool in hand, a click (or a tap) fires the Tool's Activated event, on the server too. A swing plays Roblox's own sword slash: an Animation names it by its id, and the character's Animator, inside its Humanoid, loads it into a track to play:

local slash = Instance.new("Animation")
slash.AnimationId = "rbxassetid://522635514"
character.Humanoid.Animator:LoadAnimation(slash):Play()

Without a limit, a player could click as fast as they like, so a swing remembers when the last one was, per player, in a table, and refuses another within Settings.SwingCooldown seconds.

Challenge

Easy

Near the top, add local lastSwing = {} and the slash Animation (id rbxassetid://522635514).
Write swing(player) above PlayerAdded: return if the player has no living character or swung less than Settings.SwingCooldown ago; otherwise remember the time and play the slash on their Animator.
Where you give the sword, connect its Activated to swing(player).

Press Play, hold the sword and click. Then Check.

Try it yourself

local Players = game:GetService("Players")
local ServerStorage = game:GetService("ServerStorage")
local Settings = require(game.ReplicatedStorage.Settings)

print("Swords deal " .. Settings.SwordDamage .. " damage")

-- Every player gets Kills on the leaderboard, and a sword every life
Players.PlayerAdded:Connect(function(player)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player

	local kills = Instance.new("IntValue")
	kills.Name = "Kills"
	kills.Parent = leaderstats

	player.CharacterAdded:Connect(function()
		local sword = ServerStorage.Sword:Clone()
		sword.Parent = player.Backpack
	end)
end)