First thing I noticed was the spinning sprites in the title screen background. It looks super cool. The cutscene in the start was awesome! Really liked that.
I like it a lot that you can become super powerful by eventually gathering as many powerups as you can get a hold of. Discovering where some of the obstacles were coming from was a sick moment for me! I got some massive Isaac vibes from this, and getting to the end of the game really solidified that for me.
I did notice that the enemies have a bit of an agressive lunge that can get you from quite far away, and it can be a bit hard to predict. Some sort of visual effect or animation to help anticipate a bit what's gonna happen could help with that!
The gameplay itself is quite fluid, but the shooting control scheme took some time to get used to. A suggestion would be to let the player control the shooting through the mouse!
I really liked the story and the message of the game. It was a cool moment when I got to the boss and understood a bit of what was happening. The music is absolutely stellar, and the credits song was an unexpected but very welcomed surprise. It helped to cement the hopeful spirit of the game.
This is really good, especially for a first game. You guys rocked!