Simple concept, but effective once you put it into play. I would suggest expanding on this idea since I feel like you can get a proper story/game out of it as well. Nice job on it. It would also be interesting if the player were able to throw different things at the monster besides boxes and barrels with the monster reacting differently depending on what it was hit with.
Here's my channel for other games I have played. https://www.youtube.com/c/Levont