I have almost got it down on Legendary solo, a Dawnblade Warlock is pretty fast if you pop super on the wall and just Icarus Dash the whole way, also with an Eager Edge sword for everything else. Seems like using Dragons Breath on the Spider Tanks and emptying on the Servitor and Brig, then swapping to Polaris Lance to finish off the Boss is going to be the play. The main issue is that you almost have to do it flawlessly to have enough time, especially in the middle section as you get bumped back fairly far if you die. All you need is a fair amount of practice if you are attempting this solo but even with a team you should still practice the jumping sections, and learn where the buttons are to make your teammate's jumps easier if they are following you.