You want feedback? This is hands down the BEST 2.5 FPS I've ever played!
IMO, it's better than any DOSMan Games (and some of these are good), Wolf3D, Blake Stone, new retro shooters of the same kind... and it's free!
Great level design (and non-labyrinthine), weapon feedback is punchy, the soundtrack rocks, and once I've started, I only stopped until I've finished the game.
You should really consider extending for some more episodes and going commercial on Itch.io and Steam.