Thank you very much!
Well, to implement this, I had to disregard other aspects which got scrapped or rushed (though some are coded just not used) such as sounds for enemies/walking/weapons, animations using just transforms and linear interpolation, a simplified level design, no secrets and keeping the basic mechanics to have a DoomRPG gameplay.
Using an AI to generate the textures also saved a lot of time to focus more on the code.
Though the feedbacks showed me this strategy to earn time played a little against myself since I've constructed the base of the game to be a RPG, not an action game. Also the inputs and actions system needs some enhancements to be more intuitive/comfortable.
So I indeed plan to extend it! But it may however take a little time before the next update since there a several things I have to fix and add. If things go as planned, it may play differently when it will be finaly ready to play
Thank you again for this encouraging comment!