While kind of simple, as a retro gamer I liked the graphic style. As some other suggested, small things like flipping the player when moving in opposite direction would do much for the feel. Good work on a first game!
Thank you for your feedback! I'm glad to hear that you enjoyed the retro graphic style. I made the art assets with Procreate. Actually, I've fixed that player flipping issue. I'll upload the edited one soon. Thanks again for playing and providing your thoughts!