I bashed my head on this game for several minutes before and was ready to give up on it, but then I checked the description on the page and finally understood what I had to do and what the controls are.
After that, the game became much more interesting! I think the typing challenges were a clever metaphor for the story; typing letters backwards while being besieged by demons indeed felt very stressful. The game as a whole reminded me of some old MS-DOS games from my childhood, in both how original and how unforgivingly hard it was. I made several attempts to complete the first night, but had no luck with that. Most of the time, the timer ran off before I was able to complete all the books. The difficulty felt too unearned; this game would have benefited from a gentler difficulty curve, for example, you have to read only 3 books in the first night, then 6 on the second, and finally 9 on the third.
What this game would have also benefited greatly from is some sounds. I liked the sprite work and lighting alright, but without sounds, the game presentation felt lacking, like I did not have enough feedback to my actions, and thus they felt less impactful. Sounds from monsters and the environment would have also benefited greatly in building tension and creating a spooky atmosphere.
I also found the monsters irritating more than terrifying. A single swing of the bat's wing was enough to reset the whole challenge, which, considering how tight the timer was already, meant that I could have just restarted the night. I think it would have been more interesting then instead of resetting the challenge, monsters were creating some difficulties in completing it, like making the text blurry or shaking the camera while they are around, these kinds of things.
Overall, despite some of the shortcomings, I think the game has some interesting ideas and is impressive for a jam entry. Hopefully, my feedback and criticism will not discourage you from improving this game, because I think it has the potential to become an interesting, fun experience!