This is a guide to upgrading weapons by Fuse Weapons in Hyrule Warriors: Age of Calamity (HW:AoC) for the Nintendo Switch. Learn how to unlock the Blacksmith and upgrade weapons through Weapon Fusion, and how to transfer skills to other weapons.

How to Unlock the Blacksmith

Clear the Road to the Ancient Lab

Weapon Fusion can be done at the Hylian Blacksmith Guild. Before the Blacksmith even appears in the map, you'll have to clear the second battle of Chapter 1, Road to the Ancient Lab. Finishing this battle will unlock the Blacksmith and a few more quests and challenges.

Road to the Ancient Lab Walkthrough

Assist the Brawny Blacksmiths

The Brawny Blacksmiths will appear northeast of the Hyrule Field. Assist the blacksmiths by giving them 5 Ironshrooms. Supplying the required materials will give you access to the Hylian Blacksmith Guild's services, such as weapon fusion and selling weapons.

How to Complete Brawny Blacksmiths

How to Unlock
Clear the Battle: Road to the Ancient Lab
Reward
Hylian Blacksmith Guild Unlocked
Required Materials
Ironshroom ×5

How to Fuse Weapons

Weapon Fusion Steps

①	Select a Character
②	Select the Weapon to Upgrade
③	Select your fusing materials (weapons you will give up to fuse)
④	Fuse!

The steps above show the basic process for fusing weapons. Note that once you give up a weapon for fusing, you cannot get it back!

Notes about Weapon Fusion

Level up weapons with a high base attack A bonus is obtained when fusing weapons with the same seal (Skill: +1% | ATK: +5) A new skill slot is unlocked for every five times a weapon levels up

When using the Blacksmith, it's important to keep the things listed here in mind. Since fusing weapons of the same seal will give you an attack and skill bonus, it's a good idea to continuously fuse them as you gain them.

How to Raise Max Weapon Level

Improve the Hylian Blacksmith Guild

Weapons have a max level of 20, although this level can be raised to 25, and then again to 30, after improving the Blacksmith service. To do this, you must first complete 2 Quests that improve the Hylian Blacksmith Guild and give you the ability to raise the weapon level cap — A Monumental Undertaking and The Legendary Blacksmith.

A Monumental Undertaking is unlocked after completing the Relentless as a Waterfall Battle. Completing the quest raises the max weapon level to 25.

The Legendary Blacksmith is unlocked after completing the Tactics for Small Foes Quest. Completing the quest further raises the level cap to 30.

If you have the DLC Expansion Pass, you can raise the max weapon level to 50. You need to complete Working with the Blacksmith Guild quest as part of the Royal Ancient Lab questline to increase the level cap, allowing you to strengthen weapons even further.

List of All Improve Services Quests

Visit the Hylian Blacksmith Guild

After completing the required Quests, visit the Hylian Blacksmith and select the Raise Weapon-Level Limit option. Choose the weapon you want to increase the level limit and provide the necessary materials.

When you're done, you can continue fusing weapons to that weapon to reach the new max level and unlock a Hidden Seal!

How to Unlock Hidden Seals

How to Transfer Weapon Skills

Steps for Transfering Over Skills

①	Select the weapon you will upgrade
②	Select a weapon with a skill you want to transfer over
③	Finish selecting fusing materials
④	Fuse!

Fuse Weapons With the Same Seal!

Decide on which weapon you'll upgrade Gather 4 weapons with the same seal Level up to Level 19 using fusing materials with no seal Use fusing materials with the same seal to reach level 20

Buy fusing weapons that have the same seal, you'll be able to obtain a skill and attack bonus. Although you can use other weapons with other seals to gain skills, fusing weapons of the same seal allows you gain powerful bonuses to make the most of your weapons. Therefore, it's better to only use weapons of the same seal when fusing and leveling up!

Grinding for Weapons

You're going to need a lot of weapons to reach level 20. The easiest thing to do is to change your difficulty to Easy mode, then try to repeatedly clear battles in the quickest time possible.

Recommended Battle for Farming

Battle Name	Time to Complete
ExplosiveーHandle With Care	~100 to 200 Seconds

List of Weapon Skills

Seal	Skill	Value(s)
	Damage to Foes with Status Effects	13%
	Damage to Midair Enemies	7% , 13%
	Dash-Attack Damage	7% , 13% , 18%
	Flurry Rush Damage	7% , 13%
	Midair-Attack Damage	7% , 13% , 18%
	Regular-Attack Damage	2% , 4% , 6%
	Strong-Attack Damage	2% , 4% , 6%
	Ancient-Part Drop Rate	5% , 9%
	Battle EXP	3% , 6% , 9%
	Battlefield-Specific Material Drop Rate	5% , 9% , 14%
	Detects Nearby Chests	-
	Detects Nearby Koroks	-
	Fusion Material EXP	150% , 250%
	High-Resell Weapon	-
	Improves Quality of Found Weapons	-
	Increased Blupee Encounters	-
	Material Drop Rate from Grass	5%
	Mineral Drop Rate	10%
	Monster-Part Drop Rate	5% , 9% , 13%
	Rare-Material Drop Rate	17%
	Sensor-Registered Material Drop Rate	15%
	Damage at Full Hearts	2% , 4%
	Damage from Enemies	-3% , -4%
	Damage per 100 KOs	2% , 4%
	Heal a Percentage of Damage Dealt	-
	Heal by Defeating Enemies	-
	Healing-Item Drop Rate	12% , 20%
	Healing-Item Effect	3% , 5%
	Reduced Damage from Fire	-
	Reduced Damage from Ice	-
	Reduced Damage from Lightning	-
	Special-Attack Damage	5% , 8%
	Attack Range	4% , 7% , 10%
	Attack Speed	3% , 4% , 6%
	Auto-Critical Hit after Combos	-
	Chance of Landing Shockwave	11%
	Chance to Automatically Guard	10%
	Chance to KO Weak Enemies	11%
	Damage at 30% Hearts or Less	7% , 12%
	Damage Reflected When Guarding	20%
	Damage to Locked-On Target	10%
	Perfect-Dodge Timing Window	5%
	Perfect-Guard Chance When Guarding	11%
	Resistance to All Status Effects	-
	Special-Attack Charge Rate	3% , 6%

Best Weapon Skills

Weapon Fusion Tips

Farm More Weapons

Upgrading weapons is only possible by weapon fusion, and weapons will also be used as materials in the process. Obtain more weapons from battles, such as Challenges, to upgrade the weapon of your choice further.

Another easy method of gaining weapons comes from scanning amiibos, which can allow you to gain materials and weapons.

amiibo Support | amiibo Rewards and How to Use

Transferring Weapon Skills

If your weapon has a free weapon skill slot, you can transfer a weapon skill from a component weapon through fusing. When transferring weapon skills, keep an eye out for matching seals as they can boost the weapon skill bonus and weapon damage even further, as mentioned above!

Be careful when choosing a component weapon with two or more weapon skills as only the first weapon skill will be transferred to the chosen weapon while the rest will be discarded.

Weapons with Fusion Material EXP

Look out for weapons with Fusion Material EXP seals. When fused with a weapon, it can give as much as +250% bonus EXP!

Related Guides

Age of Calamity Tips and Tricks

Gameplay and Controls
How to Perform a Weak-Point Smash	How to Perform a Flurry Rush
Parrying Guide: Who Can Parry?	Controls and Controller Options
Restoring Hearts: How to Heal	How to Change Characters
Sheikah Runes Guide	How to Use Rods
Blood Moon Rewards and How to Unlock
Tips and Tricks
Korok Seed Locations	Treasure Chest Locations
Rupee Farming Guide	EXP Farming Guide
Weapon Fusion Guide	How to Use the Sheikah Sensor
What to Do With Rusty Weapons	How to Break Korok Balloons
How to Remove Weapon Seals	How to Unlock the Secret Ending
How to Unlock Hidden Seals	How to Use the Korok Sensor
Weapon Farming Guide	100 Percent Rewards and Guide
Combat Tips and Techniques	All Secrets and Unlockables
How to Jump and Use the Paraglider	Best Items to Sell
How to Catch Blupees	List of Upgrades
FAQs
List of Multiplayer Features	Difference Between Difficulty Modes
amiibo Support and Rewards	How to Save
Expansion Pass Contents	Is Age of Calamity Canon?
Is Age of Calamity Open World?	How Long is Age of Calamity?
Version 1.2.0 Patch Notes and How to Update	Is There a New Game Plus?
How to Change Language Settings	Frame Rate Issues and How to Fix