Game is a lot of fun, especially the blood splattering around ahaha. I dont have too much experience with the genre, but here are some thoughts of mine nonetheless. The shotgun feels nice, although imo the reload time is either too fast or the magazine size too big. Enemy sizes werent big enough to ever feel overwhelming, as the shotgun has plenty of ammo and basically oneshots anything. The enemy interacting with the environment also makes it more plausible. The fans in the ceiling add a lot to the atmosphere, in general i think the athmosphere makes sense and adds positively to the gameplay, the rusty bridge was surprising and intrigued me but sadly i couldnt see what lies behind. The only thing i could maybe say is that i feel like the sounds are a bit too flat for the environment, most spaces are rather vast and i feel like the sound should have more echo maybe. Being able to drag in the Inventory would also be nice, if you go farther with the game.
The game sadly crashed a lot for me, one time when i threw a grenade at the doorway of the shop room, multiple times when walking around, especially after that first big area, a few times within the shop bootup when i click randomly, and the last time in the middle of the bridge after i went back to collect some ammunition.
But given its a proof of concept its really good and im looking forward to your next demos.