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