With that said, a few things I would note:
1) The controls feel restrictive at times. When the enemy is right next to me, the enemy has a much easier hitting me. If the enemy corners me against a wall, they can easily land multiple hits before I can fight back (which is also how I died).
2) The sword can hit through walls. This is probably a bug, but when the enemy is another room but right next to the wall common to both rooms, I can easily hit him without taking damage.
3) This happened just once, but apparently, the command for move RIGHT got stuck. The player kept moving right, even when I lifted the key. I couldn't replicate this, so it might be one of the accidents that happen once every 100 times.