Solid experience overall! Interesting movement system, fun boss fights, and a vampire waifu, what more can you ask for? Here's my playthrough for anyone interested:
Not much feedback I can give other than a few obvious suggestions if there's still interest to add more content:
For example, expanding the rouge-lite elements would be great for replayability, such as adding additional playable characters and/or more types of dash techniques for completely different kinds of playstyles. Of course, adding more stages and separate routes with more boss fights will add even more variety.
If there's any desire to expand the narrative a little, it would also be cool to see a few different outcomes depending on how you play the game (i.e. how fast you complete the game). Oh, and some CG art to accompany the endings would be great too, but not necessary (all I'm saying is that Valerie in a swimsuit would probably do wonders for marketing).
Anyways, I had a good time, I'll be looking forward to anything else that the team creates in the future!