A unique 3D-styled game for the browser! Loved your usage of the dithering shader. I cornered myself with zombies when I tried looking for the way forward on my first attempt.
Small feedback: I feel like the map was a bit confusing to navigate, doors and exits were a bit hidden in the texturing, blending in with the walls, and I got lost pretty easily. Something that could perhaps help with this is maybe a small minimap that shows you the room layout. But it’s also understandable if you designed the rooms with the maze-like feel intentionally!
Good job on the submission!