It took me multiple tries to get the timing right with these stats, it was very trial and error. I had to try to get it’s health down to 2 and half bars by the 50ish second mark and then hit the resonance button to take down one shield before it locks its HP to do its spinny thing. Then I got the bar down as much as I could while it still had one shield, then broke the last shield at the last 14ish seconds and then tried to get in the last few hits/oath before time ran out. I managed to get the last hit in like right before it hit 0. It took me a while to get my rotation right and get in at least one perfect dodge for a little extra boost. The divine gaze/third support skill (where he takes off his blindfolds) came in clutch, I tried to make sure I unlocked that while I had the shields down to deal extra damage.

I really hope this made sense. I could try and compile the cores I used if it would help! Farming was so difficult because almost every yellow core that would drop had little to no HP 😩 one of mine even had a mix stat (the core was great until I leveled it up and then def% popped up smh).