I'm up to Stage 3', and I know I will just have to use some kind of FAQ to keep up with all the secret routes and alternate stages and what not, but for now, I'm just limiting myself to the two unlockables, Rondo of Blood and Symphony of the Night. But as for the remake itself... It's a blast. It's quite challenging(I might've gotten a game over on Stage 2, really), but the controls are very responsive. The game also looks fantastic, Ayami Kojima's style was translated pretty faithfully into 3D, and after going through Killzone, the brownest game on earth, this is pretty awesome.
The best thing about this game? Not only is the main game pretty solid(So far), but you can unlock the classic Rondo of Blood version AND Symphony of the Night, how awesome is that?