Reminds me of Unreal Gold (probably because of the gun with that smooth looking vertex shading)
Maybe it barely fits the theme, but hey - you made a game.
And on top of that, a 3D one with level that doesn't have collision traps and weird collision related bugs. With well shaded areas and working mechanics.
The character camera homes in to the right all the time but i suppose it's a bug - yea making a FPS controller from scratch in Unity is kinda pain.
Even if you didn't make all of these elements, you started somewhere and were able to export a working WebGL build. I hope that you learned new stuff from this project and that you will use it for future crafts.
In my scuffed experience i use gamejams (it's my 2nd gamejam lmao) to get a kick in the ass to do something when i'm feeling like i don't have any ideas. Otherwise i try to think on my own special game and write down anything feasible to reasess what should i do next.