Quite a bit of self deprecating humor there. It was humor, right? The game wasn't THAT bad.
On the first try I just tried out all the different pieces and on the second try I built four cannons to the corners of the tower and populated them. That strategy worked so well that I lost interest after a while and started doing other things while waiting for it to end. I wonder how long it would've lasted had I built more cannons and populated them too...
Would've loved if the game was a bit more interactive. Also the projectile graphics were a bit bugged (they seemed to turn in weird ways). Apart from that the game looked nice enough. Can't have everything in a game jam game though, so good job!