How to beat ascended Pure Vessel

I was doing this to practice for Pantheon of Hallownest, which is what I was hoping to upload, but I got killed by nightmare king Grimm, whom I completely forgot was in that pantheon and immediately turned off the game

The charms I was using were dash master, unbreakable strength, quick slash, and quick focus for those curious


Some tips for those that are not visual learners
Pure vessel has 3 attack phases, on the first phase he has a thrust attack, a triple slash, the jump/teleport up and ground pound, and the attack where he shoots out like 6 daggers, in his second phase he "focuses" and creates zones where you can't stand, and in the third phase he pretty much just uses a great slash which you can double jump over.
He also tries to parry, just don't hit him when he holds his nail in-front of himself and you'll be fine
To avoid the thrust attack just jump, you can get a hit on him as he flies by by attacking downward.
For the triple slash you can either dash through him, or if your shadow dash isn't available you can jump over him and downward slash to parry his attack, you have to parry it though otherwise you'll get hit 90% of the time
for the jump spikes, the spikes are a little thicker at the bottom of the screen so you'll want to jump after he hits the ground and get between one of the pillars of light, then correct your positioning before you hit the ground so you don't hit the base of them.
For the dagger throw just shadow dash through them, don't jump beforehand though, you might dash directly into his hand and take damage.
For the focus just run away from him and don't stand in the obvious circles, you can get a heal in if you have quick focus but it's not easy
For the tentacle attack at the end just double jump over it, I think you can bounce on him by attacking him but I hadn't tried it

Never charge him before he attacks or it will likely get you hit, unless you can react quick enough with a dash
I didn't use my magic very much but it's mostly because I didn't think of it, the magic in this game takes too long to cast imo but maybe I just haven't used it enough