looking really good. I may have found a bug tho, First time I tried level 1 I got one star (the left on) second time I got one star again but it was the far right star.... ? dunno if I was meant to get three stars or something.
The only other thing I'd suggest is that when using keyboard controls for gameplay, I like to be able to navigate the UI as well. I kinda expect to be able to go to the next level with the shoot button or right arrow. Otherwise it means switching back and forth between keyboard and mouse
Regardless, this game is looking promising!