Awesomeness all around.
I didn't look at the name of this when it started (I was linked to it, and just let it run), and at 40 seconds my hair stood on end (I'm a big Castlevania fan). Very epic indeed sir. There are a few parts where some instruments dominate a little too much, and it's difficult to hear the rest of the instruments (such as the switch at 2:35, it's tough to hear the violins).
It's the best remix I've ever heard though. Thanks for bringing back memories.