I liked the music! I agree with the other commenters—the linked health has a lot of potential. I also liked the stone platform sprites.

Little things I think you could fix pretty easily: the connection seems to linger after you kill linked enemies, there's no indicator of the player's health that I could see, it did seem like it wouldn't fire whip properly occasionally (that could have been me), and I think the main player sprite would look more natural if it had arms. I think tweaking the controls to improve handling would help a lot as well.

Neat idea connecting enemies health bars!

ayy, Castlevania 1 whip design :D

So, am I correct in assuming the enemies were connected health wise? When I killed one, both died. That is a pretty neat concept if so! Would work great in bullet hell games. It would be like: "as long as you hit anything, you're doing it!". It would keep difficulty consistent until all health of all enemies is drained. The more I think about it, the cooler the idea seems! 

Anyway. Good entry! It got my creative thoughts going, which is awesome! :D