Hello, I noticed that you uploaded the wrong file for people to play. Since I also use Game Maker and have a license, I decided to create an executable for people to be able to test your game. I hope this can still be of help (I apologize for the "intrusion", if you don't like it, I can remove it without any issues). Since you mentioned that it's incomplete, I'm not sure exactly what areas to point out for improvement, but the idea is really good and I really liked the lighting system used, the triangular vision looks great, and the artwork is very nice. One thing that could be changed is the sprite for the "E" key, because when we look straight at it, it disappears due to our field of vision being white and the sprite being entirely white, adding a black outline would help a lot.
Link to download your game:
https://drive.google.com/file/d/1_rGH04BX93SCdeaG3oHEZWVVFQV9373D/view?usp=shari...