As you play through the main campaign in Splatoon 2, you’ll be given the chance to use an assortment of different “Hero” weapons. These weapons are just variations of the ones you’ll find in the game’s multiplayer modes, but each one can be upgraded to increase its damage, range, and other stats. In this article we’ll talk more about the upgrade system, how to unlock weapons in Splatoon 2, when you can unlock the weapon system, and how you can start upgrading your weapons today.

How to Upgrade Weapons

Upgrading weapons in Splatoon 2 is a fairly simple task, though you will need a few things in order to do it. First, you will need to complete up to the third lair, just before the first boss fight of the game. When you complete the third lair, and then defeat the boss, you’ll unlock the first of many “Hero” weapons available to your Inkling hero. You’ll also unlock the Ammo Knights Enhancifier, which can be used to upgrade any of the weapons you acquire from Sheldon.

You can also find out how to unlock all the Hero weapons by checking out our other guides on Splatoon 2.

In order to upgrade a weapon’s stats, you’re going to need to obtain a few different things. First, you’re going to have to load up on Power Eggs. These are the little round orbs that you collect throughout the different lairs in Splatoon 2, and they can often be earned just for breaking crates, popping balloons, and just completing various levels.

You’ll also need to acquire Sardinium, which is a more premium currency that has to be found throughout the world. There is usually at least one Sardinium per lair, so be sure to check around for it like you would for Sunken Scrolls and other collectibles. Need help finding it? Check out our guide on where to find Sardinium for more detailed information.

Once you have all the items you need, make your way over to the Ammo Knights Enhancifier and active it by pressing A on the controller. Once inside, locate the weapon that you want to upgrade, and then select it. If you haven’t collected all the items that you need, you won’t be able to upgrade the weapon just yet.

Now that you know how to upgrade your weapons in Splatoon 2, be sure to check out our guide on how to get new weapons in Splatoon 2’s multiplayer. There you’ll find detailed information that will help you jump into the action and start unlocking even cooler gear for your Inkling. We’ll have plenty of Splatoon 2 content over the coming days, so check out our Splatoon 2 guide often for any updated information and guides!