Quick review -
"Not game related":
Love interactivity of main menu. It's simple but clean looking, would appreciate option settings for things like volume slider or resolution though.
Tutorial:
Explains all systems pretty neatly, but would be nice if there was a pause or short break whenever new mechanic gets explained, it's not so easy to focus on reading dialogue/tutorial and dodging bullets the same time (well, we have unlimited health but it still would be nice)
After tutorial, it's not as clear what to do on the "Defeat Goddess of Wine" screen, would be nice to display in-game cursor/some tooltip (or keyboard support for menu) about clicking stage, cause after playing most of the game with keyboard only, you'd expect you can enter next stage with it too.
Game itself:
I feel like each stage is too short...
Like yea, it's demo, it's bullet hell, but I feel like each short stage taking less than minute to beat might be too short...
Yea, it is kinda extended tutorial, but still would love to see some more patterns for each goddess (assuming that's all we'll get from Wine Goddess).
Love the "hints" after dying too, they might be bit too much on the nose, but for first stages that's how it should be.
I like the gameplay itself, but I feel like it might get bit too chaotic with mixed colors - though from what I've noticed purple projectiles always seem to be on top layer, which is good.
Well, waiting for updates and good luck with the game