Wow, even for an experience as short as this, the message it has makes up for that tenfold. I love the story you've presented, and would honestly love to see more done with this cast of characters in the future!
I also really like how the horror aspect is done here. A lot less "in your face" but instead having a sense of dread and sadness permeating throughout. I have to wonder about what that level 4 was meant to be...
I know talking about the controls is overdone by now, but it still plays very well regardless! With just a little more polish to gameplay, I think it would have bumped up the game-feel enjoyment a couple notches.
Overall, solid game, hope to see more done with this! I've replayed it a couple times, and I'm still not even sure if I've found all the secrets it has yet haha, but I'm definitely excited to see potential future projects!!