First of all, compliments for getting this running in the browser! I gave it a few tries. The movement feels very smooth and I love the little animations :) Also the red cloud underneath an enemy when they dash towards you is great! This kind of visual feedback very important in my opinion :)
I managed to get an enemy stuck inside the wall - but that's not bad because that is the only enemy I defeated hahaha xD Really nice little game and I'm looking forward to see how you develop your skills and what you do next :D