Awesome work making something spooky game boy themed! You employed some really cool design choices, like hiding in the lockers! I really loved the mimic locker and jack in the box. The art is super cute. The monsters are cute but scary in presentation which is really fun. I liked how you made it so you could hold the button to break stuff, but It looked better when I was tapping the button fast. I think speeding up how often the "break" animation and sound play would really push how satisfying this activity is. Its already such a cool mechanic that it feels like a missed opportunity to really push that.. Its hardly a criticism, and more of a thought.
I really think Lurk is an excellent game and an even more excellent game jam submission. A game boy port would be really cool to see! Thank you for making and sharing your work!