It's a tiny game, but there's some good stuff in here.
I like the main character's walk cycle, and find most of the assets are very clean and readable. Going for simplicity rather than noise and clutter really worked in your favor here.
The fact that there's not a lot of mechanics implemented actually enhanced the spooky atmosphere a bit for me at the start, so I'd suggest you build on that. For instance, finding a battery or realizing you can hide in lockers far before any of those mechanics are actually useful made me wonder whether I should be memorizing where lockers are for when I need to run back to them, or consider if filling up my item slots was wise, or whether I oughta leave room in case I need to pick something up and then make a run for it.
There's clearly a lot left to add until you have a complete core loop, but I feel like this is a promising start. Keep it up!