The dev mentioned elsewhere they were mostly focusing on just completing a project rather than making something truly groundbreaking, and I can respect that; that's essentially exactly what we did last year!
For what it is, you made a fun little distraction game. You leveraged unity's physics system to good effect and made it fun to spread a little mayhem. If you're looking for things to improve for next time, Unity can handle a lot more rigidbodies than that, so don't be afraid to make the buildings out of smaller cubes; it could prove more satisfying to explode! I also had an issue with fullscreening the game forcing it into some weird aspect ratios. It almost seemed intentional at first, but the more I played with it the more I realized it probably wasn't.
On balance though? I had fun with it! I hope to see more of your work in the future.