Things You'll Need
Instructions
Equip the Hookshot as your secondary weapon.
Use the Hookshot to pull the small orbs away from Arrghus, then use your sword to destroy them. Continue doing this until all the small orbs are destroyed, triggering Phase 2.
Wait for Arrghus to jump into the air, and watch for his shadow on the ground. He will land on the area where you are standing when he jumps; move outside the shadow, charge your sword and release it when he lands to hit him.
Hit Arrghus again if he starts bouncing off the walls to send him back into the air. Repeat this process until he succumbs, relinquishing a Heart Container and the second Crystal.