Congrats on finishing the jam! I really enjoyed this - there wasn't really a dull a moment between managing your little guys and keeping the waves of enemies off. +1 for moustache
I think the art was well done. It was simple enough to get the point across without clogging the screen with a lot of noise given you need to resource manage your Busters. Music was fun. Maybe it would be nice to have some additional SFX.
One bug I found was that the music would only repeat the first 10 seconds. A refresh solved the problem.
It would've been nice to be able to move the buildings after they were placed and it would've been nice if the Busters had a stronger pull towards the enemies. When they start overflowing it was nice that they would push themselves into other buildings maybe focusing on that for automation and placing of buildings would be good. I wish that when you clicked on the buildings that it would take from the larger overflow areas instead of necessarily the closest.
Another thing that might help is "parking lots" for Busters ready to fire to go. You could have them auto load into the guns which might give a little bit of breathing room to construct your village.
Great job!