So I'm running a Throwing build and have had my fair share of challenges. The mod is fun and I would love to try more classes in it but my point on this discussion focuses on Zui, The Radiance.
I believe Zui's damage is really high for when she is at (of course i'm sitting at 42 with armor and accessories and I could try to get more defense focused modifiers but I don't see what an extra 12+/- could bring to the table). Either that or my defense with the closest Throwing armor set (Eldritchian set) available. I know that bosses are made to be challenging and I've brought Zui down to 27% before so I know there's a mix of learning and correcting here. However for damage of her attacks, I think her contact damage should be much lower than it is since she has so many high damaging abilities and the literal teleportation directly on top of the player. Unless there is a specific thing I could do to avoid that damage (other then parrying with Vixyl) I do genuinely think she's fine other than the needed contact damage nerf. I will also point out I am playing on normal difficulty, which is another problem I see with Zui and (like a panzy) worries me to see what she does in Expert and Master modes.
Zui does require some quick thinking/reacting and I'm curious to see if anyone else is having troubles fighting her or if I'm just making things harder on myself. Please let me know if anyone has tips or tricks and in the meantime, I will keep throwing my head at the wall.