General:
The graphics really stand out. It looks very professional, and the animation is great. It could easily be a mobile game. The theme works for me as well, even though it takes place in a house. At first, I didnāt know what I was supposed to do. I only realized you can buy upgrades through the door after reading another comment here. I also couldnāt reload the first time because I didnāt notice the instructions on the title screen. Once both things were clear, I was able to play properly, and it was fun. Maybe you could add a tutorial later on. Like lready mentioned the camera should pan to the direction you are facing.
Graphics:
The colors complement each other well, the menu looks chic, and the UI elements look great too.
Music / Sound:
The sound effects are fitting; the music loop could be a little longer. Atmospherically, it suits the game well.
Theme:
The theme is fulfilled, even though it looks more like a house.
Conclusion:
A simple action game with an upgrade feature and professional-looking graphics and animation.