An attempt was made at Malignant Dark Falz Solus. (Fi/Bo). (Pure Double Saber).

While this run is scuffed, it's the best boss RNG I could get in a couple of hours of trying, and most of the damage I take doesn't affect my damage output much.
This boss has so many layers of RNG that I don't know where to start, like needing the first set of pods to come early so that the 2nd arm opens before the break stagger happens, so I can PB dump in there, as well as needing the boss's RNG to cooperate during the time that the first arm opens so I can sneak in enough damage to break it before it closes.
In conclussion: While fighter with the full kit has more than enough oomph to clear this quest, I don't think pure DS has the numbers to pull it off (not without using 3 Wingards for each scenario the fight can present anyways).