So I watched the videos through your YouTube channel. I'll post some feedback / thoughts I have:
*I'd suggest looking into using different recording software for your videos. A lot of parts on your videos look like they're running sub 30 FPS. It makes things appear as if they're in slow motion. For example, on Warakiya Village you have a section with primitives and parallax backgrounds at work, it seems to have severe and noticeable drops in performance. Does the game just run like that, or is it the quality of the recording?
*You have some interesting concepts for stages, but I think a lot of them have too much going on in the background. I'm going to use Warakiya Village again here, but I notice you have a mixture of primitives and 2D parallax backgrounds scrolling in the background. It's certainly a fun idea, but in my opinion there is so much going on at any given point in time I always feel incredibly distracted. There's rain, all-too frequent bursts of lightening both in the sky and on the stage itself (which causes the screen to flash), people running around, a wolf, 3D houses, 3D plains, fire... there's so much going on! I think showing a little restraint with the use of all of these special effects would greatly improve the look and atmosphere of the stages, as it seems like a lot of it is there just for the sake of being there. Just my two cents.
*Almost every fangame ever is going to have this issue to some extent, but there are a lot of clashing graphics in all of your stages. A lot of tiles that don't quite fit are often placed together, and sometimes I noticed the background work seemed sort of cut and pasted together. Not really a big problem since this is early in development, but some polish on the stage designs and tile placement would certainly improve the look.
*The long vertical room inside the church is a neat idea and reminds me of SoTN a bit, but perhaps the graphics could be tweaked to be more inline with the aesthetics of the SoTN tilesets used?
*It's really bizarre seeing an IGAVania-styled Alucard being in the same room as this tall, slow-walking barbarian of a Belmont. It's made even more apparent as Alucard and Sypha both have a light jog as they move around but in contrast you have Trevor who literally trudges along but manages to maintain the same speed. In my opinion, these two art styles are very distinctive and do not work well together at all.
*You may not have gotten around to putting in sounds yet, but I believe it'd make a big difference in the presentation of your videos.