Orcs Must Die! 3

This is story based and is not missable. Although this will only unlock when completing "The Lava pits" for the first time and not any other war scenario even if it is your first. This map is fairly easy the best tips I have for this is use a weapon you're comfortable with (if not the one it gives you when starting), use the catapult only available in war scenario to your advantage and aim for large groups of enemies. Also, always use barricades. These are essential for enemy pathing and will almost always be the best trap in your arsenal.