SWORD ART ONLINE: FATAL BULLET

I was level 50 going into the fight and found it pretty easy. Not sure if the boss scales to your level, if so then this strategy should make the fight easy regardless of your level.

There's only you and your ArFA -sys and I just always made sure we were at different sides of the bridge so that the boss was facing one way or the other. The boss has a big blue button on his back that is his weak spot. When he's facing you, you can take some time to apply whatever buffs you use and focus on dodging his missile and kick attacks. Rolling worked best for me. After a short time he'll switch his attention to your partner. His back is now completely exposed and you can quickly whittle his health down by shooting the weak spot. He'll turn towards you again and away again, so it's a simple rinse and repeat/have patience battle. It was about a 5 minute fight for me with 2 ++ assault rifles.

A tip I read that works, since I was getting rekd, was to spam the grenade launcher