MP Kill is preferable, but...
Well, in 4D mode, Azazer would have 297,000 HP and 27,000 MP, and that's not counting whatever boost Gutsy Bunny gives.
I can only pray for you, Shadow. :( During my challenge, I used Nel's Whirlwind for supreme juggling pwnage (it also helps to get it up to level four or so, it's a relatively easy skill to level up because you can activate it anywhere in the battlefield). The other two characters were basically meat shields for her to cancel to 175% for Whirlwind and kill all the soldiers at once. Azazer took even longer to kill, but that was only on Universe mode without the Gutsy Bunny. I have no clue how long it'll take for this. :( :cat: