Very cool concept! struggled to get it to work a little, and I think I just didn't have the right resolution for level 6 (compressed the window to it's smallest size and it didn't cover the spikes up top)
I thought it was a little unintuitive how the window can only be resized in one direction each level, maybe changing the design/colour of the pink border depending on which axis it can do would help? I really did like the small nudge level, was an awesome "aha!" moment when I figured out the solution. Great work on getting this over the line in time for the deadline!