You’ll want to start unlocking skills and when you get to Slant, take the route going down. This is because as you use a weapon class it levels up allowing you to unlock more skills for that class. You’re going to want to focus solely on one-handed swords.
In Sword Art Online: Hollow Realization, you are once again in control of Kirito (even if you customize it to be differently), so naturally that means you’ll eventually be able to dual wield, as well. It was the reason he was such a legendary player and why so many other characters in the show look up to him. This made him a combo machine, upping both his speed and his DPS. One of the most popular abilities from the SAO anime was Kirito’s ability to dual wield swords. Dual Wield – Sword Art Online: Hollow Realization