This is a great start! I love the art style and it’s a solid gameplay loop. Had to stop playing because there was no progression and the enemies didn’t seem to be coming any faster, so it got a bit repetitive.
It took me a minute to figure out that I had to press the space bar to start the game. It would be great if the Enter key worked as well, or at least if some of the controls were in the description for the game. I don’t see the point of the “exit” button.
Adding sound and some form of progression would go a long way.