Lovely art and nice concept!
Below is a list of bugs I found, please don't let the fact that this post is mostly bug reports discourage you.
- Double-pressing the shot key also triggers the special attack when the meter is below half full and even produces a short burst when the meter is empty, allowing to defeat bosses without collecting any coins
- When you game over, score and power carry over to the next run
- Graze and point items don't work
- When you game over while a boss has her shield up, the ring stays on screen during subsequent runs
- The last two bosses have no attacks?
- There is no way to exit to the menu, including after beating the game
It is a lovely game though, I still had fun playing and I wouldn't expect a 72-hour project to be bug free. Also huge props for doing Linux and Mac builds, the Linux build didn't work for me but that might be due to my system (Microsoft.Xna.Framework.Graphics.NoSuitableGraphicsDeviceException: Failed to create graphics device!).
PS: Personally I think the hitbox situation is fine, it is where I'd expect it to be on the sprite. It's true that the sprites are a bit big in this game but I quickly got used to it and I think it's a good aesthetic for a game with not that much going on at once, might feel empty with smaller sprites.