I think the visuals here are really nice—I really liked the model you made from the pixel art and the sound effects were a perfect match for it! I couldn't progress past the room with the pairs of enemies in wait around the corners, but I think with some tweaking to the enemy and combat mechanics I could easily see this expanding out into a much fuller and richer dungeon crawling experience.
As it stands, the balance feels off when it comes to enemy speed vs player health. Progression required me to memorize the room layouts to know where I could go to line up my shot while minimizing aggro'ing the enemies, and then make that shot perfectly so I could line it up and do it again. Thanks for making and sharing your game!