The game is really good! But it should be noted that the author of the game took the already popular and favorite game DOOM and changed some details (I understand that the game was made from scratch and it was difficult to implement in PICO-8, but the game has not changed ideologically). The project can be perceived as an experiment or a high indicator of the author's skills, but not as a new and completed work. But I really liked the performance of the game.
Incredible work!