For sure Misery battle was the worst. On my first run alone I had to fight her nearly 50 times just from dying on her.
The best was Undead Core. I enjoyed slowly getting better and eventually beating it, but Misery really tested my patience. I couldn’t ever get in a good groove with her. Plus the art for Undead Core’s stages are just enough creepiness and feels like a great progression.
Misery's pretty easy, strategy wise.
Her attacks go 1, 1, 2, no matter how many rings go around her or how far she is from you.
Attack 1, float still, offering you to attack her before shooting a line of energy orbs.
Attack 2, same as Attack 1, but magically summons a block above you instead of the energy balls.
Misery will always attack in the 1, 1, 2 pattern, try to stay as close as you can if you don't want her to use lightning, don't get greedy, the most damage you can do to her per round is ~86 hp, if you think she's too low to shoot from the bottom when she has the rings orbiting around her, just attack her from the sides.
Hope this can help make her easier
