Much easier way to kill the last boss:
First, you may wanna spend 20 minutes and grab some good equipment if you don't have it - Dracula's Tunic and Satan's Ring are really, really easy to get and totally worth it. Also, max out your magic potions, or whatever the hell they're called, from Hammer's shop.
Now for Teh Easy: equipt the Death soul and the Abaddon soul. Jump up on the highest level and start tossing locusts at the guy's mouth using the Abaddon soul. If too many triangle monsters attack you, turn the Death soul on and let the sickles help you out. Once the upper head is gone, hop down and do the same on the knee (you'll have to jump before you shoot locusts this time, but that should be your only change.) I fought this boss, like, ten times before I tried this strategy, and it just knocked him out good.
Anyone like Julius mode more than regular mode? It just doesn't feel like Castlevania without a whip.