This was a cool retro first person shooter game that involves the main character running into a random castle and killing random demons. It would be cool if there was an introduction to the game like why is the main character at this castle and what is he trying to do there as currently, the game is pretty simple, to find the green room and that is the end of the game. It is actually possible to avoid the demons as well to complete the game so it would be really interesting to see how the game develops from it's current state where there is a proper ending implemented as well.
Thank you for reading my comment and I wish you good luck in your future