At long last I have a prototype available! The art is placeholder (although some might end up in the final product due to time constraints), the gameplay is likely rather unbalanced, the enemies are simple, there's little feedback on hits, the thematic element isn't yet there, there is neither sound nor music, and there are bugs--but you can now at least try it for yourself!
You should be able to download the prototype via the link below:
(I'm not hugely happy with the name, and may change it in future versions.)
Feedback would be appreciated, I do believe!