ok i'll answer this one i guess.
wolf, here's what i did. use trickster and A&R. when fighting the boss, simply jump into the air, cross slash, press the style button, and slash again. you can keep doing this and it's a good way to dodge his attacks. when he changes color, get out of the way and jump and trickser arround to dodge the spears. continue this method until vergil comes in. switch to E&I and start shooting him to death as Verg slices the crap out of him. and when those blu/red things come out of the water, shoot them with kalina anne and jump out of the way. it's that part where you will earn your tripple S in the stylish meter. it's hard to fail with that method if you can keep your distance on the second half of the battle.
now back on topic.
you know you're a noob at DMC when you have invincibility and you still find a way to die.
. /\.................................../\
./ \ /\___/\ . . . . . ./\___/\ / \
. |(*/\/\/\*) . . . _ (*/\/\/\*)|
. C( ____ )D(\__/)C( ____ )D
. | /* /\ *\ .(='.'=) /* /\ *\ .|
. | U __ U . (")_(") U _ . .U .|
!!!!!I'M ON BUNNY PATROL!!!!