I think you could pace and design the game way tigher. Good example is the first room, there are a bunch of upgrades. But, i have not seen anything of the game yet, so they seem really odd to me. But then, to open the door you have to press the button and that button took forever to open the door. I guess this might be important later if the monster is chasing you, but if the ifrst thing I do in a game is pressing a button and wait 5 seconds before something happens,... I might as well play something else. There are over 2000 submissions in this Jam and pressing a button and waiting is not gonna make me want to stay for your game.
I luckily played a bit further and I liked the atmosphere. I think the monster is actually scary, which is good. But then again, once I made it past that monster, I could run through endless corridors, collecting cakes and there was no need to actually engage with the monster on the optional paths and sometimes, there were very long passages that were straight without anything interesting.
So I think it would have been good to cut out a lot of that stuff and focus more on the interaction between the player and the scary thing.