Oh I see, it's Bordeux's AIDA. Well it might help if you tell us exactly what it is you are having problems with, because it's hard to give advice when you don't have any problems yourself.

I just tried fighting it now and I got it's HP down to arround 25% pretty much without even getting hit, so I'm not sure what advice to give you really besides the basics. It's a pretty straightforward fight. Any attack in particular you are having trouble with?
I'll list the attacks and the proper moves to do against them.
Shooting spider web. = Start slashing through it, don't try to dash.
Charging against you and start attacking with it's arms. = Dash to the side.
Shoots small balls that home in on you. = Slash at them when they come close.
Shoots super charged spider web. = Dash to the side and then stand still in a safe spot. But you probably can't stand still in the same spot all the time so you may need to dash to a new location when the spider web starts closing in. Just pay attention to how it moves and you can avoid it easily.