I really enjoyed your game! Even though it's pretty simple, it's fun to play and has a good level of difficulty which keeps me engaged. I like the art style and the colors, and the gameplay is very fun, it reminds me of the Binding of Isaac. The weapon and sound effects make it very satisfying to play too. My main suggestions would be to prevent enemies from spawning within one tile of you and use a different music track that fits the game more. Overall though the gameplay was the highlight for me and this is very impressive for a solo dev, great job!