If you just do a few simple to moderate combos on a group of scarecrows you can get it on the first level OR go to any level with alot of Demon Knights be playing as Nero and activate yamato when the knights throw there swords at you. With timing a giant hand will grab the sword out of the air and throw it back impaling all of the knights and going right to SSS rank. I even got the achievement for maxing out the style bar this way. I just finished the game on Human mode. I love it, It is repetitive but what game isn't? Me too, just finish Human mode yesterday. Starting the Devil mode (is it the harder mode? Me don't know:P)