"Is an absolute fustercluck," is the rest of that title.
What the hell?
Boss spawns copies of himself everywhere.
Enemies spawning every second.
Stop Ether gathering thing.
Boss constantly teleports and makes more copies.
You can't even see what's happening half the time during this fight. Bullets, energy blasts, Scorn spawn smoke, perfect-aim sniper shots, and all manner of crap just flying all over the screen at the same time. Did you let a four-year-old make this one? Because it looks like somebody just threw everything all over a piece of paper and said, "Yeah, that looks great."