I like the art style and sound effects, especially the shop keeper! But I feel like the game doesn't ramp up quickly enough, so it's easier to get bored. I'd recommend making it more action packed in the beginning!
Thank you for your review! The first levels are meant to be more of tutorial levels, since I've had issues in the past with the game mechanics being hard to understand. I wanted to prioritize teaching the player how everything works, which explains how the beginning levels might feel a little slow.