Amazing concept, great and engaging gameplay, played it through twice, cause I failed on my 1st attempt. I think the gameplay could've benefited from enemy spawn hotkeys. Overall good job for completing an engaging game. (friendly tip for the future, you can always use free art assets, which makes the developement quicker and doesn't make the game any less "yours"
P. S. your game had a tutorial and a quit button, which is more than I can say about most games in the jam I played so far,.