I liked that you gave a choice of characters that all evolve with their own advantages. I also liked the variety of helper characters and their abilities, as it made my choices feel well balanced. I would like to see some sort of indicator that shows how close your character needs to be to hit an enemy, and maybe even also an enemy health gauge. It could even just be that the image of the enemy changes as its health gets lower. I understand that there is a cooldown between your attacks, but having a visual indicator of some kind would be helpful. Lastly, making the music loop and last throughout the gameplay will add a nice quality of life element to the game experience.
Nice work!