The art style is superb!! You have a lot of talent if you were able to create in 9 days this whole world with its characters. The characters and the world gave me a Hollow Knight vibe. I like the small detail that the one with the horns would get stunned if they hit a wall, lol. As another commenter said, the short attack range and randomness of the enemy movement make it a little frustrating at times, but I believe this is great for a starting area that teach your the basics, while later you gain more power, more range, maybe even range attacks like fireballs that make you feel more powerful as the game progresses.
I definitely think you have a good base to expand on and you definitely have the visual skills to pull this off. Amazing job so far!