This was pretty good take on this type of gameplay, it could very easily be developed into more longer game with multiple levels and all. Also I'm quite found of the visual style of the game, it is very charming, keeps consistent and the variations that some monsters bring are fun. Sound design, which is extremely important for this type of game was also well executed, but for me it was a mistake just to jump into the game without properly reading what each monster does first hehe. Ended up being dogpiled with all of the sounds in the first few seconds, but that's completely on me. I think my honest only problem is that the parallax movement with the mouse feels off? It seems as if it's reversed, aka when I want to see more of the corner with the door for example, I need to move my mouse into the opposite corner. Regardless, you did a great job with this! I tried few times with different combos of enemies to see how it felt and it got quite challenging at points, so I had fun trying it out ^^