This game is actually a blast. Giving your enemies an attack pattern each round is a super creative idea that makes the game really fun once you give them enough. The visuals are good, and I like that there's a hitbox indicator f or your shop.
You definitely need to add some audio though. A few sound effects as well as some simple background music will make your game twice as good. I would also make it so that you choose which type of attack to give out of the given choices, rather than have a set order.
Overall, great game and I had a ton of fun playing it.