User blog comment:BannedLagiacrus/Monster Appreciation Week: Kushala Daora(4th Gen)/@comment-10613301-20151002215039/@comment-25275196-20151006222741

Once you solo him, he turns from a moderately difficult fight into a monstrocity of both speed and power, barely giving you any time to stand still and drink potions (Speed eating +2 is very handy here). And not giving you much chance to attack until he is exhausted. I've only soloed him once, and it took me 4 quests (maybe SnS is not the way to go, even if it is the W.F SnS).