Not sure if it's bugged, or I'm just not getting something. I've been having troubles with the "maintain sweeping wind" objective. Do you have to maintain 3 stacks the entire time or something? Every time I use wave of light it says I failed the objective, even though I have 2 stacks left. I tried going through the entire dungeon just to see if it was just saying that but I didn't actually fail, but nope. It didn't count, even though I had at least one or two stacks the entire time.
Tried doing it without using Wave of Light, and beat it. Guess you have to maintain 3 stacks the whole time, which is very stupid, to completely negate the 6 set bonus.