I really liked the game and here's why, the idea is simple, the implementation is good, there are no bugs, it fits the theme perfectly, the soundtrack is gorgeous, the camera is at a nice angle and is made with knowledge. I wanted to criticize the art style, but I changed my mind, since from the point of view of Game Design this style even fits, but you took Doom as a basis and the narrative was lost, also you clearly increased the clock in size, because of which the game has mixels. While writing the comment, I remembered the background, it is very cool, but since you have demons flying, it does not fit very well.
Thank you for your game, it really gave me pleasure, I went through it from beginning to end. Good luck in the future