Interesting game, I like the audio a lot, it really gives of a creepy vibe. I'm not sure if the game fits the theme, but I like the idea of changing graphics.
I do have some feedback for you:
- Don't reset the whole game when the player touches an enemy. Give the player hp or reset the current level. It's way too punishing at the moment.
- In level 7 I spawned and before I could process what was hapening I died, becuase an enemy walked into me.
- Make the enemy hitboxes smaller.
- The player can sometimes not move in a direction. I suspect that you can only move while centered on a tile.
- I think a top down perspective would work better for this game.
I hope this feedback will help you with improving the game, good luck!