I'm a big big fan of Castlevania 3/Akumajou Densetsu, and this one hits the right spot... if only this wasn't too easy for it's own good. I love how you can switch between the characters and how broken they are, though! And honestly it's really interesting to play as a solo character, too. It makes the stages somewhat harder but in turn it makes the boss fights easier if you know what you're doing.
Doesn't help much that the game hands you a bunch of lifes... it reminds me a lot of Gunvolt in that aspect.
Still, it's a really enjoyable experience and the soundtrack kicks ass! Really stoked to start Ritual of the Night later on!