So I've been kind of stuck on one of the Adventure Mode Maps. You need to kill 800 enemies in 10 minutes on the Temple of Sacred Souls half-map, as Sheik for the Heart container. I am having extreme trouble getting A-Rank here. I always end up taking way too long or getting bullet-seeded in the back for OHKO.
My tactic usually involves running into groups of enemies and laying down area attacks in order to clear most of them, then move onto the next group. I don't bother specifically taking out enemy captains or bosses at all, which usually result in me playing ring-around-the-rosey running from bosses trying to target large mobs of enemies. Is this the right tactic to use? Or should I be killing enemy captains so they don't rally or the bosses so they don't chase?