Judging this on what exists:
Art style the character models and scenery style are very cute and curvy. It feels pretty professional. Judging from the other games you've released, it seems pretty on point for what you do. Good stuff.
Controls are also very tight and responsive feeling. Platforming feels good. Though it's hard to tell exactly what I think of gunplay because there's no targets. Do the bullets come from the camera, or the gun? That matters a lot. I also would accept any sort of feedback on hitting scenery (i.e. sparks or bullet decals for hitting geo)
Also, no way to zoom the camera in and out. I'd like to be able to do that a little bit with the scroll wheel, either to examine cute character models or get a better view of the area.
Story seems good, and the intro cutscene feels neat and has some drama to it. I am rather baffled from the fact I'm given duel guns but the test area only lets me fire one? Wouldn't be easier to animate the usage of two guns instead of dealing with an arm clipping through the chest?
Sound wise ; The music didn't *quite* feel like it fit the rest of the aesthetics, but the choice of SFX did. Though the SFX was a bit shrill.
All and all, neat demo. If you could deliver on the full game or a more complete public-intended demo, I'd give it a shot.