That was an interesting game, for sure! One thing I really liked was your use of the 2D shadows to hide monsters behind the barrels and crates, the zombies in the final level coming from behind the darkness as you came close with your lantern was pretty cool to witness! Which, by the way, I think you did a good job with the atmosphere as well, the way the game moved at slow pace and you had to fix/clean the floor while you kept hearing the wood cracking or what sounded a lot like steps, pretty spooky! You also managed to make quite a bit of content for a game jam game, keep it up!
My main critiques would be: that I felt like the animation needs some work, the blob has one frame to indicate it's about to attack but it really doesn't look like a wind up. It took me a while to understand how its attack worked, but once I did I just didn't got hit anymore. Also, was there any reason to turn off the lantern? As it is I don't see why it needs to have a button to turn it on/off, just leave it on. Lastly, I also felt like there was too much to clean up in most levels, it just made them drag on a bit too much. I liked how in the first level the lamps would just break as you approach them, fixing these made more sense and helped create atmosphere but most of the time I felt like that mechanic wasn't the peak of the gameplay loop.
But yeah, I think this game is above average. Thanks for making it, and good luck!