Really solid submission! Game looks nice and it's polished.
Gameplay at first is not that clear because I thought I should protect customers but with second run I realized that is way of serving them not killing :D
I lika game loop is pretty unique tower defense in classic Mario perspective. That music on 20 level is so cool!
I didn't reach 60 level, at some point game is not scaling anymore so I couldn't find anything that could motivate me to push forward, probably here could just limit level cap or think how to scale it.
Congratulations on your first submission! Waiting for more!