Nice work on this one. It kinda reminds me of Slitherio meets Binding of Isaac. I liked the work on the animations, they were very unique.
The level up popup is easy to dismiss and not read as you click to shoot and it can immediately dissapear.
Overall this was a good one and I liked the detail and graphics and the simplicity of this game!
Oh, and congrats on your first finished game for the GWJ, that is awesome!!