This game is fire! It was super fun. Mechanics, art, sound are very juicy. One small inconvenience is the lack of animation before the enemy shoots. You launch yourself to kill enemy, but he shoot you when you so close to him. It feels very treacherously. You created a great game!
Cool idea! Sometimes drawings spells works strange, but it's nice mechanic. I don't know anything about balancing game, but I think you can design cast of enemies with unique vulnerabilities and resistance and avoid one spell spamming. You did a great job!