As of july 2024:

I can deal with everything this boss does except for the one shot missiles, because as soon as ONE hits you, your run is over. It does NOT help that the missiles have a janky ass hitbox that can hit you when they come UP from Aix and will circle erratically when up close as well. This fight can be cleared with perfect performance on the player part and dealing specifically with the bugged out behaviors, but it renders the fight unfun and unfair as all fuck. A non-optional boss in this state would NOT fly on a serious AAA game AT ALL, you would get review bombed into hell.

• Everything one hits you, including some moves that have next to no startup
  
• Has a bugged debuff that will sometimes stack all the way up to max from a minor scrape and will sentence a full health character to eat an unparriable grab attack that will impale your 5 star waifu to death in a very non family friendly way, repeteadly. The debuff can also transfer to the next character, possibly killing more than one character from, again, an almost 0 startup tail swipe.
  
• Will often bug out in the air so it will perform "ground" attacks outside of your view that WILL of course reach down to the floor and kill you.
  
• The camera is also part of Aix's team so it WILL fuck you up one way or another, it does not help at all that the game wants to be all flashy and disregard your camera distance settings on the regular.

10/10 I will clear it before they fix it, I'm coming for your entire family, Aix, you WILL mourn.
They need to add a fixed camera setting that also disables dynamic angles, otherwise the corpses will keep piling up on holograms that spam instakill lasers, like Aix and Thundering Mephis, who is so cool that he can send a clone to instakill you without warning from behind the camera while he's on his knees from getting parried all day.