The moment the bell rang on the duel start, Astroth melded with Luna, whilst summoning Morpheus and White Death. He started receiving ranged attacks, but merely ignored their damage.
He then sent White and Morpheus to the enemy party's back-line, disrupting their damage, before he dove into the frontline, accompanied by Genie, who came out of hiding.
His opponents comprised two tanks, four melee damage dealers, 4 ranged damage dealers, and two healers. This was a pretty balanced team, all things considered.
But it wouldn't matter much to him. At his current speed, he was too fast for any of them to catch him, so he prowled through their ranks with impunity.
He never targeted one person in particular, dealing damage around the whole of them equally. He already had a plan in mind, and that would wipe away their dumb attitude forever.