Hey there! I genuinely enjoyed navigating through your game's unique world. The atmosphere you've crafted, especially with the retro particle effects and water rendering, really stood out. The solid ceiling adding a claustrophobic feel was a creative touch! Admittedly, I got a bit lost and ended up back at the start, so I didn't complete the game, but I truly relished the experience regardless.
Just a couple of suggestions: refining the weapon animations for better intuitiveness, it feels a bit weird that the animation plays only when the left mous button is pushed down. I did not understand how it should work. And perhaps adjusting the mouse sensitivity could enhance the gameplay. You could also add some point of interest scattered on the map that could add some lore using only environmental narration. Looking forward to more of your creations!
Good job!