I love the health system of the boss! Also I got stuck after killing the boss, or maybe the end isn't implemented. As I started playing the game, I was shocked you were able to do this in 3 days. However, I think it is a little overscoped and it shows. There are no sound effects for clicking the windows, Though the level design of the stack is pretty great, the lack of player optimization for playability such as simply tedious jumps at the end of the level that make you run through all of it again and the lack of ending for my playthrough of 20 minutes lower the plusses from amazing effort and polish you added to the game.
Even if you overscoped, I still think this is the second best game I played in this jam. I simply loved the window part and wished there were more of it. Impressive work!