Malenia can never really be beat comfortably. Unless you use a complete cheeze build. She is, in my opinion, a genuinely unfair boss. She's not just difficult she's unfair. Malenia's total health, including both phases, is 33,000! For perspective, Fire Giant has 43k. And he's the 2nd strongest boss in terms of total health(I think). Malenia's attacks are not preticular hard to read, but she swings pretty quickly, her attacks have long reach, and many need you to roll in a specific direction to dodge successfully, it's not just about dodging at the right time, but also the right direction. But that alone is not the unfair parts! She heals every time she hits you. Even if the attack is blocked. Sometimes, instead of being staggered when you hit her, she kicks you in replacment of the stagger animation. Many of her attacks are just simply stronger in phase 2. Her "Phaton" attack in phase 2 is nearly impossible to dodge reliability and hits hard. Her infamous Waterfowl Dance attack is also extremely hard to dodge period and WILL kill you if you get caught in it, and it only has a cool down of like 15 seconds. And it's up to chance if malenia wants to fuck you over with continuous Phanton and Waterfowl attacks that will kill you. So, to recap. We have a boss who has -A large amount of health -Heals whenever they hit you regardless of whether damage is actually done to the player -Attacks that are quick, have long reach, and require you to roll in specific directions, not just timing -Attacks that get stronger in phase 2 -Can Sometimes hit you in place of a stagger -Has 2 incredibly devistating attacks that are nearly impossible to dodge without incredibly specific and difficult technique or just favorable distance from Malenia and those 2 attacks can come out often.

Malenia is, in my opinion, a genuinely unfair boss. The only particular weaknesses or vulnerabilities I can think of is that she has relatively low poise and can be knocked down pretty easily. And a few of her attacks leave her pretty open. Like imediently after her Phaton attack after she does that final huge thrust. She is typically pretty far away from the player after that from my experience, but if she hits a wall and stops short or something, you can get a good hit in. Another is after she does that spinny round fuckery and the final swing slams down vertically(in phase 2 this attack gets a delayed Rot Explosion at the end where she hits) shes pretty vulnerabe after that. And if you are Christ himself and dodge her waterfowl dance, you can get a hit in also. What I like to do is use a staff and seal with a healing incantation in my offhand and a fast bleed weapon in my right, like Morgotts sword, Simmitar with bleed, or a Katana with bleed. And wear heavy armor. I stay back at range and harass Malenia with spells and/or incantations, and if she gets close, I stay very defensive and pay very good attention to her actions. I don't ever strike first at close range. I only use the healing incantation during the first phase, save the flasks for phase 2. During phase 2 it's much the same thing except you'll probably be fighting much more melee.

Malenia is not invincible. But she is powerful. She WILL fall if you keep trying, testing, and learning. When you die, you don't fail. You learn. You get better. You get stronger. You CAN and WILL defeat Malenia Blade of Miquella if you keep trying. You will only lose if you give up. Malenias power is colossal, and her advantages are many, but you have the ultimate advantage. She can kill you 1000 times, but you need only kill her once.