Boss Rush S Rank

[Techim]

So..........I manage to do it around 14 min and got C Rank.
Guide says under 8 min for S Rank.
I thought that's really hard to do until I saw this video doing it legit.
http://youtu.be/AGkH0qPt_0k

Any tips on getting S Rank?
Eg which weapons are best for which boss, etc

[objekshin]

Missiles are your best friend, use em on everything, but Omega, Monster X, Rabid Toroko, and curly (Rabid Toroko is eh with missiles)
(monster X is also eh)

Missile Targets sighted:
-Igor
-Balrog 2
-Balfrog - underneath the chin
-Omega (when in air)
-Puu Black (You have to get in real close, closer than the bubbles that guard him I think)
-Balrog 3
-Core
-Iron Head
-Red Devil
-Doctor, muscle or not
-Heavy Press
-Ballos (Moon form 1, and moon form 3)

Spur:
-Sisters
-Undead Core
-Ma Pignon
-Misery
-Ballos (Moon form 1 and 2 and 3, but use wep switching)

Blade:
Monster X
Puu Black (IF no missiles)
Balrog 3 (optional, better DPS than missiles)
Iron Head (Also optional)
Core (Again, optional)

The rest of the bosses, you can figure out on your own. (fireball or polar star)

I would not recommend nemesis, bubble gun, machine gun, or snake, for they are useless in my opinion, but fun to use. (Duckys and bubblebath anyone?)