Build used during this fight: My Builds - Last Epoch Tools
This feedback is largely centered around collision detection/invisible walls, busted telegraphs, buggy boss movement, and other general observations. This fight lasts at least twice as long as it would were it balanced and functioning correctly.
I hear the word “doable” tossed around a lot to describe what success looks like in Last Epoch. For me, “doable” is not a great experience. Please note that there are other issues that should be obvious here not directly mention in the comments.